Subscriber session limit
Filip Nikolić
filip.m.nikolic at dotnetworks.rs
Thu Jan 15 22:39:56 UTC 2026
Hi,
Alan
Sorry If I wasn't clear in first message.
I am trying to establish the 60k sessions running on Ixia machine over the BNG.
Every time as I am running a sessions my process is failing after I reach 28232 user. ( it looks like that their is a limit).
I am wondering where can be a bottle neck,
When I run the freeradius in debug mode I see this:
(59150) Cleaning up request packet ID 1 with timestamp +857 due to done Waking up in 7.8 seconds. (57551) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57557) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57561) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57564) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57567) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57569) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57575) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57577) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57583) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57590) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57591) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57597) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57601) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57603) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57604) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57605) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57608) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57609) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached (57615) Cleaning up request packet ID 1 with timestamp +835 due to cleanup_delay was reached
leanup_delay was reached
(59146) Cleaning up request packet ID 1 with timestamp +857 due to cleanup_delay was reached
(59149) Cleaning up request packet ID 1 with timestamp +857 due to cleanup_delay was reached
Ready to process requests
After this messages my process stop. And I can't establish any other session.
This is my output in debug mode:
root at radius:/home/vbng# freeradius -X
FreeRADIUS Version 3.0.26
Copyright (C) 1999-2021 The FreeRADIUS server project and contributors
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE
You may redistribute copies of FreeRADIUS under the terms of the
GNU General Public License
For more information about these matters, see the file named COPYRIGHT
Starting - reading configuration files ...
including dictionary file /usr/share/freeradius/dictionary
including dictionary file /usr/share/freeradius/dictionary.dhcp
including dictionary file /usr/share/freeradius/dictionary.vqp
including dictionary file /etc/freeradius/3.0/dictionary
including configuration file /etc/freeradius/3.0/radiusd.conf
including configuration file /etc/freeradius/3.0/proxy.conf
including configuration file /etc/freeradius/3.0/clients.conf
including files in directory /etc/freeradius/3.0/mods-enabled/
including configuration file /etc/freeradius/3.0/mods-enabled/linelog
including configuration file /etc/freeradius/3.0/mods-enabled/ntlm_auth
including configuration file /etc/freeradius/3.0/mods-enabled/pap
including configuration file /etc/freeradius/3.0/mods-enabled/files
including configuration file /etc/freeradius/3.0/mods-enabled/preprocess
including configuration file /etc/freeradius/3.0/mods-enabled/sql
including configuration file /etc/freeradius/3.0/mods-config/sql/main/mysql/queries.conf
including configuration file /etc/freeradius/3.0/mods-enabled/detail.log
including configuration file /etc/freeradius/3.0/mods-enabled/always
including configuration file /etc/freeradius/3.0/mods-enabled/logintime
including configuration file /etc/freeradius/3.0/mods-enabled/unix
including configuration file /etc/freeradius/3.0/mods-enabled/radutmp
including configuration file /etc/freeradius/3.0/mods-enabled/exec
including configuration file /etc/freeradius/3.0/mods-enabled/sradutmp
including configuration file /etc/freeradius/3.0/mods-enabled/passwd
including configuration file /etc/freeradius/3.0/mods-enabled/utf8
including configuration file /etc/freeradius/3.0/mods-enabled/echo
including configuration file /etc/freeradius/3.0/mods-enabled/soh
including configuration file /etc/freeradius/3.0/mods-enabled/eap
including configuration file /etc/freeradius/3.0/mods-enabled/replicate
including configuration file /etc/freeradius/3.0/mods-enabled/detail
including configuration file /etc/freeradius/3.0/mods-enabled/realm
including configuration file /etc/freeradius/3.0/mods-enabled/expr
including configuration file /etc/freeradius/3.0/mods-enabled/expiration
including configuration file /etc/freeradius/3.0/mods-enabled/unpack
including configuration file /etc/freeradius/3.0/mods-enabled/cache_eap
including configuration file /etc/freeradius/3.0/mods-enabled/attr_filter
including configuration file /etc/freeradius/3.0/mods-enabled/dynamic_clients
including configuration file /etc/freeradius/3.0/mods-enabled/digest
including configuration file /etc/freeradius/3.0/mods-enabled/chap
including configuration file /etc/freeradius/3.0/mods-enabled/mschap
including files in directory /etc/freeradius/3.0/policy.d/
including configuration file /etc/freeradius/3.0/policy.d/abfab-tr
including configuration file /etc/freeradius/3.0/policy.d/accounting
including configuration file /etc/freeradius/3.0/policy.d/canonicalization
including configuration file /etc/freeradius/3.0/policy.d/debug
including configuration file /etc/freeradius/3.0/policy.d/moonshot-targeted-ids
including configuration file /etc/freeradius/3.0/policy.d/eap
including configuration file /etc/freeradius/3.0/policy.d/cui
including configuration file /etc/freeradius/3.0/policy.d/rfc7542
including configuration file /etc/freeradius/3.0/policy.d/operator-name
including configuration file /etc/freeradius/3.0/policy.d/dhcp
including configuration file /etc/freeradius/3.0/policy.d/filter
including configuration file /etc/freeradius/3.0/policy.d/control
including files in directory /etc/freeradius/3.0/sites-enabled/
including configuration file /etc/freeradius/3.0/sites-enabled/default
including configuration file /etc/freeradius/3.0/sites-enabled/inner-tunnel
main {
security {
user = "freerad"
group = "freerad"
allow_core_dumps = no
}
name = "freeradius"
prefix = "/usr"
localstatedir = "/var"
logdir = "/var/log/freeradius"
run_dir = "/var/run/freeradius"
}
main {
name = "freeradius"
prefix = "/usr"
localstatedir = "/var"
sbindir = "/usr/sbin"
logdir = "/var/log/freeradius"
run_dir = "/var/run/freeradius"
libdir = "/usr/lib/freeradius"
radacctdir = "/var/log/freeradius/radacct"
hostname_lookups = no
max_request_time = 30
cleanup_delay = 1800
max_requests = 16384
postauth_client_lost = no
pidfile = "/var/run/freeradius/freeradius.pid"
checkrad = "/usr/sbin/checkrad"
debug_level = 0
proxy_requests = yes
log {
stripped_names = no
auth = no
auth_badpass = no
auth_goodpass = no
colourise = yes
msg_denied = "You are already logged in - access denied"
}
resources {
}
security {
max_attributes = 200
reject_delay = 1.000000
status_server = yes
require_message_authenticator = "auto"
limit_proxy_state = "auto"
}
}
Ignoring "cleanup_delay = 1800", forcing to "cleanup_delay = 30"
radiusd: #### Loading Realms and Home Servers ####
proxy server {
retry_delay = 5
retry_count = 3
default_fallback = no
dead_time = 120
wake_all_if_all_dead = no
}
home_server localhost {
ipaddr = 127.0.0.1
port = 1812
type = "auth"
secret = <<< secret >>>
response_window = 20.000000
response_timeouts = 1
max_outstanding = 65536
zombie_period = 40
status_check = "status-server"
ping_interval = 30
check_interval = 30
check_timeout = 4
num_answers_to_alive = 3
revive_interval = 120
limit {
max_connections = 16
max_requests = 0
lifetime = 0
idle_timeout = 0
}
coa {
irt = 2
mrt = 16
mrc = 5
mrd = 30
}
}
home_server_pool my_auth_failover {
type = fail-over
home_server = localhost
}
realm example.com {
auth_pool = my_auth_failover
}
realm LOCAL {
}
radiusd: #### Loading Clients ####
client localhost {
ipaddr = 127.0.0.1
secret = <<< secret >>>
nas_type = "other"
proto = "*"
limit {
max_connections = 1024
lifetime = 0
idle_timeout = 0
}
}
client localhost_ipv6 {
ipv6addr = ::1
secret = <<< secret >>>
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
client vBNG-6Wind-Dell-001 {
ipaddr = 172.20.69.11
secret = <<< secret >>>
limit {
max_connections = 8192
lifetime = 0
idle_timeout = 0
}
}
client vBNG-6Wind-Dell-002 {
ipaddr = 172.20.69.12
secret = <<< secret >>>
limit {
max_connections = 8192
lifetime = 0
idle_timeout = 0
}
}
Debugger not attached
systemd watchdog is disabled
# Creating Auth-Type = mschap
# Creating Auth-Type = digest
# Creating Auth-Type = PAP
# Creating Auth-Type = CHAP
# Creating Auth-Type = MS-CHAP
# Creating Autz-Type = New-TLS-Connection
# Creating Auth-Type = eap
radiusd: #### Instantiating modules ####
modules {
# Loaded module rlm_linelog
# Loading module "linelog" from file /etc/freeradius/3.0/mods-enabled/linelog
linelog {
filename = "/var/log/freeradius/linelog"
escape_filenames = no
syslog_severity = "info"
permissions = 384
format = "This is a log message for %{User-Name}"
reference = "messages.%{%{reply:Packet-Type}:-default}"
}
# Loading module "log_accounting" from file /etc/freeradius/3.0/mods-enabled/linelog
linelog log_accounting {
filename = "/var/log/freeradius/linelog-accounting"
escape_filenames = no
syslog_severity = "info"
permissions = 384
format = ""
reference = "Accounting-Request.%{%{Acct-Status-Type}:-unknown}"
}
# Loaded module rlm_exec
# Loading module "ntlm_auth" from file /etc/freeradius/3.0/mods-enabled/ntlm_auth
exec ntlm_auth {
wait = yes
program = "/path/to/ntlm_auth --request-nt-key --domain=MYDOMAIN --username=%{mschap:User-Name} --password=%{User-Password}"
shell_escape = yes
}
# Loaded module rlm_pap
# Loading module "pap" from file /etc/freeradius/3.0/mods-enabled/pap
pap {
normalise = yes
}
# Loaded module rlm_files
# Loading module "files" from file /etc/freeradius/3.0/mods-enabled/files
files {
filename = "/etc/freeradius/3.0/mods-config/files/authorize"
acctusersfile = "/etc/freeradius/3.0/mods-config/files/accounting"
preproxy_usersfile = "/etc/freeradius/3.0/mods-config/files/pre-proxy"
}
# Loaded module rlm_preprocess
# Loading module "preprocess" from file /etc/freeradius/3.0/mods-enabled/preprocess
preprocess {
huntgroups = "/etc/freeradius/3.0/mods-config/preprocess/huntgroups"
hints = "/etc/freeradius/3.0/mods-config/preprocess/hints"
with_ascend_hack = no
ascend_channels_per_line = 23
with_ntdomain_hack = no
with_specialix_jetstream_hack = no
with_cisco_vsa_hack = no
with_alvarion_vsa_hack = no
}
# Loaded module rlm_sql
# Loading module "sql" from file /etc/freeradius/3.0/mods-enabled/sql
sql {
driver = "rlm_sql_mysql"
server = "localhost"
port = 3306
login = "radius"
password = <<< secret >>>
radius_db = "radius"
read_groups = yes
read_profiles = yes
read_clients = yes
delete_stale_sessions = yes
sql_user_name = "%{User-Name}"
default_user_profile = ""
client_query = "SELECT id, nasname, shortname, type, secret, server FROM nas"
authorize_check_query = "SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_reply_query = "SELECT id, username, attribute, value, op FROM radreply WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_group_check_query = "SELECT id, groupname, attribute, Value, op FROM radgroupcheck WHERE groupname = '%{SQL-Group}' ORDER BY id"
authorize_group_reply_query = "SELECT id, groupname, attribute, value, op FROM radgroupreply WHERE groupname = '%{SQL-Group}' ORDER BY id"
group_membership_query = "SELECT groupname FROM radusergroup WHERE username = '%{SQL-User-Name}' ORDER BY priority"
simul_count_query = "SELECT COUNT(*) FROM radacct WHERE username = '%{SQL-User-Name}' AND acctstoptime IS NULL"
simul_verify_query = "SELECT radacctid, acctsessionid, username, nasipaddress, nasportid, framedipaddress, callingstationid, framedprotocol FROM radacct WHERE username = '%{SQL-User-Name}' AND acctstoptime IS NULL"
safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /"
auto_escape = no
accounting {
reference = "%{tolower:type.%{%{Acct-Status-Type}:-%{Request-Processing-Stage}}.query}"
type {
accounting-on {
query = "UPDATE radacct SET acctstoptime = FROM_UNIXTIME(%{%{integer:Event-Timestamp}:-%l}), acctsessiontime = '%{%{integer:Event-Timestamp}:-%l}' - UNIX_TIMESTAMP(acctstarttime), acctterminatecause = '%{%{Acct-Terminate-Cause}:-NAS-Reboot}' WHERE acctstoptime IS NULL AND nasipaddress = '%{NAS-IP-Address}' AND acctstarttime <= FROM_UNIXTIME(%{%{integer:Event-Timestamp}:-%l})"
}
accounting-off {
query = "UPDATE radacct SET acctstoptime = FROM_UNIXTIME(%{%{integer:Event-Timestamp}:-%l}), acctsessiontime = '%{%{integer:Event-Timestamp}:-%l}' - UNIX_TIMESTAMP(acctstarttime), acctterminatecause = '%{%{Acct-Terminate-Cause}:-NAS-Reboot}' WHERE acctstoptime IS NULL AND nasipaddress = '%{NAS-IP-Address}' AND acctstarttime <= FROM_UNIXTIME(%{%{integer:Event-Timestamp}:-%l})"
}
start {
query = "INSERT INTO radacct (acctsessionid, acctuniqueid, username, realm, nasipaddress, nasportid, nasporttype, acctstarttime, acctupdatetime, acctstoptime, acctsessiontime, acctauthentic, connectinfo_start, connectinfo_stop, acctinputoctets, acctoutputoctets, calledstationid, callingstationid, acctterminatecause, servicetype, framedprotocol, framedipaddress, framedipv6address, framedipv6prefix, framedinterfaceid, delegatedipv6prefix ) VALUES ('%{Acct-Session-Id}', '%{Acct-Unique-Session-Id}', '%{SQL-User-Name}', '%{Realm}', '%{NAS-IP-Address}', '%{%{NAS-Port-ID}:-%{NAS-Port}}', '%{NAS-Port-Type}', FROM_UNIXTIME(%{%{integer:Event-Timestamp}:-%l}), FROM_UNIXTIME(%{%{integer:Event-Timestamp}:-%l}), NULL, '0', '%{Acct-Authentic}', '%{Connect-Info}', '', '0', '0', '%{Called-Station-Id}', '%{Calling-Station-Id}', '', '%{Service-Type}', '%{Framed-Protocol}', '%{Framed-IP-Address}', '%{Framed-IPv6-Address}', '%{Framed-IPv6-Prefix}', '%{Framed-Interface-Id}', '%{Delegated-IPv6-Prefix}' )"
}
interim-update {
query = "UPDATE radacct SET acctupdatetime = (@acctupdatetime_old:=acctupdatetime), acctupdatetime = FROM_UNIXTIME(%{%{integer:Event-Timestamp}:-%l}), acctinterval = %{%{integer:Event-Timestamp}:-%l} - UNIX_TIMESTAMP(@acctupdatetime_old), framedipaddress = '%{Framed-IP-Address}', framedipv6address = '%{Framed-IPv6-Address}', framedipv6prefix = '%{Framed-IPv6-Prefix}', framedinterfaceid = '%{Framed-Interface-Id}', delegatedipv6prefix = '%{Delegated-IPv6-Prefix}', acctsessiontime = %{%{Acct-Session-Time}:-NULL}, acctinputoctets = '%{%{Acct-Input-Gigawords}:-0}' << 32 | '%{%{Acct-Input-Octets}:-0}', acctoutputoctets = '%{%{Acct-Output-Gigawords}:-0}' << 32 | '%{%{Acct-Output-Octets}:-0}' WHERE AcctUniqueId = '%{Acct-Unique-Session-Id}'"
}
stop {
query = "UPDATE radacct SET acctstoptime = FROM_UNIXTIME(%{%{integer:Event-Timestamp}:-%l}), acctsessiontime = %{%{Acct-Session-Time}:-NULL}, acctinputoctets = '%{%{Acct-Input-Gigawords}:-0}' << 32 | '%{%{Acct-Input-Octets}:-0}', acctoutputoctets = '%{%{Acct-Output-Gigawords}:-0}' << 32 | '%{%{Acct-Output-Octets}:-0}', acctterminatecause = '%{Acct-Terminate-Cause}', connectinfo_stop = '%{Connect-Info}' WHERE AcctUniqueId = '%{Acct-Unique-Session-Id}'"
}
}
}
post-auth {
reference = ".query"
query = "INSERT INTO radpostauth (username, pass, reply, authdate ) VALUES ( '%{SQL-User-Name}', '%{%{User-Password}:-%{Chap-Password}}', '%{reply:Packet-Type}', '%S.%M' )"
}
}
rlm_sql (sql): Driver rlm_sql_mysql (module rlm_sql_mysql) loaded and linked
Creating attribute SQL-Group
# Loaded module rlm_detail
# Loading module "auth_log" from file /etc/freeradius/3.0/mods-enabled/detail.log
detail auth_log {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/auth-detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loading module "reply_log" from file /etc/freeradius/3.0/mods-enabled/detail.log
detail reply_log {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/reply-detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loading module "pre_proxy_log" from file /etc/freeradius/3.0/mods-enabled/detail.log
detail pre_proxy_log {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/pre-proxy-detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loading module "post_proxy_log" from file /etc/freeradius/3.0/mods-enabled/detail.log
detail post_proxy_log {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/post-proxy-detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loaded module rlm_always
# Loading module "reject" from file /etc/freeradius/3.0/mods-enabled/always
always reject {
rcode = "reject"
simulcount = 0
mpp = no
}
# Loading module "fail" from file /etc/freeradius/3.0/mods-enabled/always
always fail {
rcode = "fail"
simulcount = 0
mpp = no
}
# Loading module "ok" from file /etc/freeradius/3.0/mods-enabled/always
always ok {
rcode = "ok"
simulcount = 0
mpp = no
}
# Loading module "handled" from file /etc/freeradius/3.0/mods-enabled/always
always handled {
rcode = "handled"
simulcount = 0
mpp = no
}
# Loading module "invalid" from file /etc/freeradius/3.0/mods-enabled/always
always invalid {
rcode = "invalid"
simulcount = 0
mpp = no
}
# Loading module "userlock" from file /etc/freeradius/3.0/mods-enabled/always
always userlock {
rcode = "userlock"
simulcount = 0
mpp = no
}
# Loading module "notfound" from file /etc/freeradius/3.0/mods-enabled/always
always notfound {
rcode = "notfound"
simulcount = 0
mpp = no
}
# Loading module "noop" from file /etc/freeradius/3.0/mods-enabled/always
always noop {
rcode = "noop"
simulcount = 0
mpp = no
}
# Loading module "updated" from file /etc/freeradius/3.0/mods-enabled/always
always updated {
rcode = "updated"
simulcount = 0
mpp = no
}
# Loaded module rlm_logintime
# Loading module "logintime" from file /etc/freeradius/3.0/mods-enabled/logintime
logintime {
minimum_timeout = 60
}
# Loaded module rlm_unix
# Loading module "unix" from file /etc/freeradius/3.0/mods-enabled/unix
unix {
radwtmp = "/var/log/freeradius/radwtmp"
}
Creating attribute Unix-Group
# Loaded module rlm_radutmp
# Loading module "radutmp" from file /etc/freeradius/3.0/mods-enabled/radutmp
radutmp {
filename = "/var/log/freeradius/radutmp"
username = "%{User-Name}"
case_sensitive = yes
check_with_nas = yes
permissions = 384
caller_id = yes
}
# Loading module "exec" from file /etc/freeradius/3.0/mods-enabled/exec
exec {
wait = no
input_pairs = "request"
shell_escape = yes
timeout = 10
}
# Loading module "sradutmp" from file /etc/freeradius/3.0/mods-enabled/sradutmp
radutmp sradutmp {
filename = "/var/log/freeradius/sradutmp"
username = "%{User-Name}"
case_sensitive = yes
check_with_nas = yes
permissions = 420
caller_id = no
}
# Loaded module rlm_passwd
# Loading module "etc_passwd" from file /etc/freeradius/3.0/mods-enabled/passwd
passwd etc_passwd {
filename = "/etc/passwd"
format = "*User-Name:Crypt-Password:"
delimiter = ":"
ignore_nislike = no
ignore_empty = yes
allow_multiple_keys = no
hash_size = 100
}
# Loaded module rlm_utf8
# Loading module "utf8" from file /etc/freeradius/3.0/mods-enabled/utf8
# Loading module "echo" from file /etc/freeradius/3.0/mods-enabled/echo
exec echo {
wait = yes
program = "/bin/echo %{User-Name}"
input_pairs = "request"
output_pairs = "reply"
shell_escape = yes
}
# Loaded module rlm_soh
# Loading module "soh" from file /etc/freeradius/3.0/mods-enabled/soh
soh {
dhcp = yes
}
# Loaded module rlm_eap
# Loading module "eap" from file /etc/freeradius/3.0/mods-enabled/eap
eap {
default_eap_type = "md5"
timer_expire = 60
ignore_unknown_eap_types = no
cisco_accounting_username_bug = no
max_sessions = 16384
}
# Loaded module rlm_replicate
# Loading module "replicate" from file /etc/freeradius/3.0/mods-enabled/replicate
# Loading module "detail" from file /etc/freeradius/3.0/mods-enabled/detail
detail {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loaded module rlm_realm
# Loading module "IPASS" from file /etc/freeradius/3.0/mods-enabled/realm
realm IPASS {
format = "prefix"
delimiter = "/"
ignore_default = no
ignore_null = no
}
# Loading module "suffix" from file /etc/freeradius/3.0/mods-enabled/realm
realm suffix {
format = "suffix"
delimiter = "@"
ignore_default = no
ignore_null = no
}
# Loading module "bangpath" from file /etc/freeradius/3.0/mods-enabled/realm
realm bangpath {
format = "prefix"
delimiter = "!"
ignore_default = no
ignore_null = no
}
# Loading module "realmpercent" from file /etc/freeradius/3.0/mods-enabled/realm
realm realmpercent {
format = "suffix"
delimiter = "%"
ignore_default = no
ignore_null = no
}
# Loading module "ntdomain" from file /etc/freeradius/3.0/mods-enabled/realm
realm ntdomain {
format = "prefix"
delimiter = "\\"
ignore_default = no
ignore_null = no
}
# Loaded module rlm_expr
# Loading module "expr" from file /etc/freeradius/3.0/mods-enabled/expr
expr {
safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /äéöüaâaçeéeëîiôouuüayÄÉÖÜßAÂAÇEÉEËÎIÔOUUÜY"
}
# Loaded module rlm_expiration
# Loading module "expiration" from file /etc/freeradius/3.0/mods-enabled/expiration
# Loaded module rlm_unpack
# Loading module "unpack" from file /etc/freeradius/3.0/mods-enabled/unpack
# Loaded module rlm_cache
# Loading module "cache_eap" from file /etc/freeradius/3.0/mods-enabled/cache_eap
cache cache_eap {
driver = "rlm_cache_rbtree"
key = "%{%{control:State}:-%{%{reply:State}:-%{State}}}"
ttl = 15
max_entries = 0
epoch = 0
add_stats = no
}
# Loaded module rlm_attr_filter
# Loading module "attr_filter.post-proxy" from file /etc/freeradius/3.0/mods-enabled/attr_filter
attr_filter attr_filter.post-proxy {
filename = "/etc/freeradius/3.0/mods-config/attr_filter/post-proxy"
key = "%{Realm}"
relaxed = no
}
# Loading module "attr_filter.pre-proxy" from file /etc/freeradius/3.0/mods-enabled/attr_filter
attr_filter attr_filter.pre-proxy {
filename = "/etc/freeradius/3.0/mods-config/attr_filter/pre-proxy"
key = "%{Realm}"
relaxed = no
}
# Loading module "attr_filter.access_reject" from file /etc/freeradius/3.0/mods-enabled/attr_filter
attr_filter attr_filter.access_reject {
filename = "/etc/freeradius/3.0/mods-config/attr_filter/access_reject"
key = "%{User-Name}"
relaxed = no
}
# Loading module "attr_filter.access_challenge" from file /etc/freeradius/3.0/mods-enabled/attr_filter
attr_filter attr_filter.access_challenge {
filename = "/etc/freeradius/3.0/mods-config/attr_filter/access_challenge"
key = "%{User-Name}"
relaxed = no
}
# Loading module "attr_filter.accounting_response" from file /etc/freeradius/3.0/mods-enabled/attr_filter
attr_filter attr_filter.accounting_response {
filename = "/etc/freeradius/3.0/mods-config/attr_filter/accounting_response"
key = "%{User-Name}"
relaxed = no
}
# Loading module "attr_filter.coa" from file /etc/freeradius/3.0/mods-enabled/attr_filter
attr_filter attr_filter.coa {
filename = "/etc/freeradius/3.0/mods-config/attr_filter/coa"
key = "%{User-Name}"
relaxed = no
}
# Loaded module rlm_dynamic_clients
# Loading module "dynamic_clients" from file /etc/freeradius/3.0/mods-enabled/dynamic_clients
# Loaded module rlm_digest
# Loading module "digest" from file /etc/freeradius/3.0/mods-enabled/digest
# Loaded module rlm_chap
# Loading module "chap" from file /etc/freeradius/3.0/mods-enabled/chap
# Loaded module rlm_mschap
# Loading module "mschap" from file /etc/freeradius/3.0/mods-enabled/mschap
mschap {
use_mppe = yes
require_encryption = no
require_strong = no
with_ntdomain_hack = yes
passchange {
}
allow_retry = yes
winbind_retry_with_normalised_username = no
}
instantiate {
}
# Instantiating module "linelog" from file /etc/freeradius/3.0/mods-enabled/linelog
# Instantiating module "log_accounting" from file /etc/freeradius/3.0/mods-enabled/linelog
# Instantiating module "pap" from file /etc/freeradius/3.0/mods-enabled/pap
# Instantiating module "files" from file /etc/freeradius/3.0/mods-enabled/files
reading pairlist file /etc/freeradius/3.0/mods-config/files/authorize
reading pairlist file /etc/freeradius/3.0/mods-config/files/accounting
reading pairlist file /etc/freeradius/3.0/mods-config/files/pre-proxy
# Instantiating module "preprocess" from file /etc/freeradius/3.0/mods-enabled/preprocess
reading pairlist file /etc/freeradius/3.0/mods-config/preprocess/huntgroups
reading pairlist file /etc/freeradius/3.0/mods-config/preprocess/hints
# Instantiating module "sql" from file /etc/freeradius/3.0/mods-enabled/sql
rlm_sql_mysql: libmysql version: 8.0.44
mysql {
tls {
tls_required = no
check_cert = no
check_cert_cn = no
}
warnings = "auto"
}
rlm_sql (sql): Attempting to connect to database "radius"
rlm_sql (sql): Initialising connection pool
pool {
start = 20
min = 20
max = 100
spare = 5
uses = 0
lifetime = 0
cleanup_interval = 30
idle_timeout = 60
retry_delay = 30
spread = no
}
rlm_sql (sql): Opening additional connection (0), 1 of 100 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (1), 1 of 99 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (2), 1 of 98 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (3), 1 of 97 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (4), 1 of 96 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (5), 1 of 95 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (6), 1 of 94 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (7), 1 of 93 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (8), 1 of 92 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (9), 1 of 91 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (10), 1 of 90 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (11), 1 of 89 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (12), 1 of 88 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (13), 1 of 87 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (14), 1 of 86 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (15), 1 of 85 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (16), 1 of 84 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (17), 1 of 83 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (18), 1 of 82 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Opening additional connection (19), 1 of 81 pending slots used
rlm_sql_mysql: Starting connect to MySQL server
WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future version.
rlm_sql_mysql: Connected to database 'radius' on Localhost via UNIX socket, server version 5.5.5-10.6.22-MariaDB-0ubuntu0.22.04.1, protocol version 10
rlm_sql (sql): Processing generate_sql_clients
rlm_sql (sql) in generate_sql_clients: query is SELECT id, nasname, shortname, type, secret, server FROM nas
rlm_sql (sql): Reserved connection (0)
rlm_sql (sql): Executing select query: SELECT id, nasname, shortname, type, secret, server FROM nas
rlm_sql (sql): Adding client 172.20.69.12 (vBNG-6Wind-Dell-002) to global clients list
Failed to add duplicate client vBNG-6Wind-Dell-002
Failed to add client, possible duplicate?
rlm_sql (sql): Adding client 172.20.69.11 (vBNG-6Wind-Dell-001) to global clients list
Failed to add duplicate client vBNG-6Wind-Dell-001
Failed to add client, possible duplicate?
rlm_sql (sql): Released connection (0)
# Instantiating module "auth_log" from file /etc/freeradius/3.0/mods-enabled/detail.log
rlm_detail (auth_log): 'User-Password' suppressed, will not appear in detail output
# Instantiating module "reply_log" from file /etc/freeradius/3.0/mods-enabled/detail.log
# Instantiating module "pre_proxy_log" from file /etc/freeradius/3.0/mods-enabled/detail.log
# Instantiating module "post_proxy_log" from file /etc/freeradius/3.0/mods-enabled/detail.log
# Instantiating module "reject" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "fail" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "ok" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "handled" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "invalid" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "userlock" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "notfound" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "noop" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "updated" from file /etc/freeradius/3.0/mods-enabled/always
# Instantiating module "logintime" from file /etc/freeradius/3.0/mods-enabled/logintime
# Instantiating module "etc_passwd" from file /etc/freeradius/3.0/mods-enabled/passwd
rlm_passwd: nfields: 3 keyfield 0(User-Name) listable: no
# Instantiating module "eap" from file /etc/freeradius/3.0/mods-enabled/eap
# Linked to sub-module rlm_eap_md5
# Linked to sub-module rlm_eap_gtc
gtc {
challenge = "Password: "
auth_type = "PAP"
}
# Linked to sub-module rlm_eap_tls
tls {
tls = "tls-common"
}
tls-config tls-common {
verify_depth = 0
ca_path = "/etc/freeradius/3.0/certs"
pem_file_type = yes
private_key_file = "/etc/ssl/private/ssl-cert-snakeoil.key"
certificate_file = "/etc/ssl/certs/ssl-cert-snakeoil.pem"
ca_file = "/etc/ssl/certs/ca-certificates.crt"
private_key_password = <<< secret >>>
fragment_size = 1024
include_length = yes
auto_chain = yes
check_crl = no
check_all_crl = no
ca_path_reload_interval = 0
cipher_list = "DEFAULT"
cipher_server_preference = no
reject_unknown_intermediate_ca = no
ecdh_curve = ""
tls_max_version = "1.2"
tls_min_version = "1.2"
cache {
enable = no
lifetime = 24
max_entries = 255
}
verify {
skip_if_ocsp_ok = no
}
ocsp {
enable = no
override_cert_url = yes
url = "http://127.0.0.1/ocsp/"
use_nonce = yes
timeout = 0
softfail = no
}
}
# Linked to sub-module rlm_eap_ttls
ttls {
tls = "tls-common"
default_eap_type = "md5"
copy_request_to_tunnel = no
use_tunneled_reply = no
virtual_server = "inner-tunnel"
include_length = yes
require_client_cert = no
}
tls: Using cached TLS configuration from previous invocation
# Linked to sub-module rlm_eap_peap
peap {
tls = "tls-common"
default_eap_type = "mschapv2"
copy_request_to_tunnel = no
use_tunneled_reply = no
proxy_tunneled_request_as_eap = yes
virtual_server = "inner-tunnel"
soh = no
require_client_cert = no
}
tls: Using cached TLS configuration from previous invocation
# Linked to sub-module rlm_eap_mschapv2
mschapv2 {
with_ntdomain_hack = no
send_error = no
}
# Instantiating module "detail" from file /etc/freeradius/3.0/mods-enabled/detail
# Instantiating module "IPASS" from file /etc/freeradius/3.0/mods-enabled/realm
# Instantiating module "suffix" from file /etc/freeradius/3.0/mods-enabled/realm
# Instantiating module "bangpath" from file /etc/freeradius/3.0/mods-enabled/realm
# Instantiating module "realmpercent" from file /etc/freeradius/3.0/mods-enabled/realm
# Instantiating module "ntdomain" from file /etc/freeradius/3.0/mods-enabled/realm
# Instantiating module "expiration" from file /etc/freeradius/3.0/mods-enabled/expiration
# Instantiating module "cache_eap" from file /etc/freeradius/3.0/mods-enabled/cache_eap
rlm_cache (cache_eap): Driver rlm_cache_rbtree (module rlm_cache_rbtree) loaded and linked
# Instantiating module "attr_filter.post-proxy" from file /etc/freeradius/3.0/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/3.0/mods-config/attr_filter/post-proxy
# Instantiating module "attr_filter.pre-proxy" from file /etc/freeradius/3.0/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/3.0/mods-config/attr_filter/pre-proxy
# Instantiating module "attr_filter.access_reject" from file /etc/freeradius/3.0/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/3.0/mods-config/attr_filter/access_reject
# Instantiating module "attr_filter.access_challenge" from file /etc/freeradius/3.0/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/3.0/mods-config/attr_filter/access_challenge
# Instantiating module "attr_filter.accounting_response" from file /etc/freeradius/3.0/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/3.0/mods-config/attr_filter/accounting_response
# Instantiating module "attr_filter.coa" from file /etc/freeradius/3.0/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/3.0/mods-config/attr_filter/coa
# Instantiating module "mschap" from file /etc/freeradius/3.0/mods-enabled/mschap
rlm_mschap (mschap): using internal authentication
} # modules
radiusd: #### Loading Virtual Servers ####
server { # from file /etc/freeradius/3.0/radiusd.conf
} # server
server default { # from file /etc/freeradius/3.0/sites-enabled/default
# Loading authenticate {...}
Compiling Auth-Type PAP for attr Auth-Type
Compiling Auth-Type CHAP for attr Auth-Type
Compiling Auth-Type MS-CHAP for attr Auth-Type
# Loading authorize {...}
Ignoring "ldap" (see raddb/mods-available/README.rst)
Compiling Autz-Type New-TLS-Connection for attr Autz-Type
# Loading preacct {...}
# Loading accounting {...}
# Loading post-proxy {...}
# Loading post-auth {...}
Compiling Post-Auth-Type REJECT for attr Post-Auth-Type
Compiling Post-Auth-Type Challenge for attr Post-Auth-Type
Compiling Post-Auth-Type Client-Lost for attr Post-Auth-Type
} # server default
server inner-tunnel { # from file /etc/freeradius/3.0/sites-enabled/inner-tunnel
# Loading authenticate {...}
Compiling Auth-Type PAP for attr Auth-Type
Compiling Auth-Type CHAP for attr Auth-Type
Compiling Auth-Type MS-CHAP for attr Auth-Type
# Loading authorize {...}
# Loading session {...}
# Loading post-proxy {...}
# Loading post-auth {...}
# Skipping contents of 'if' as it is always 'false' -- /etc/freeradius/3.0/sites-enabled/inner-tunnel:336
Compiling Post-Auth-Type REJECT for attr Post-Auth-Type
} # server inner-tunnel
radiusd: #### Opening IP addresses and Ports ####
listen {
type = "auth"
ipaddr = *
port = 0
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
listen {
type = "acct"
ipaddr = *
port = 0
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
listen {
type = "auth"
ipv6addr = ::
port = 0
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
listen {
type = "acct"
ipv6addr = ::
port = 0
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
listen {
type = "auth"
ipaddr = 127.0.0.1
port = 18120
}
Listening on auth address * port 1812 bound to server default
Listening on acct address * port 1813 bound to server default
Listening on auth address :: port 1812 bound to server default
Listening on acct address :: port 1813 bound to server default
Listening on auth address 127.0.0.1 port 18120 bound to server inner-tunnel
Listening on proxy address * port 40379
Listening on proxy address :: port 40748
Ready to process requests
________________________________________
From: Alan DeKok
Sent: Thursday, January 15, 2026 6:03 PM
To: FreeRadius users mailing list
Cc: Filip Nikolić
Subject: Re: Subscriber session limit
On Jan 15, 2026, at 11:42?AM, Filip Nikolić via Freeradius-Users <freeradius-users at lists.freeradius.org> wrote:
> I need your support in order to help me to achieve the challenge.
> I am trying to run more then 30000 sessions but every time I run the sessions I am reaching the 28232.
I have no idea what that means.
You should actually describe your problem. Read the following web page. There is a LOT of documentation on how to ask good questions:
https://wiki.freeradius.org/guide/Users-Mailing-List
You received a link to this page when you joined the mailing list. Read it.
Alan DeKok.
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