Re: Odd behavior on authentication (w/ logs)

9 Nov 2023

...
On Nov 8, 2023, at 12:31 PM, Alan DeKok <aland@deployingradius.com> wrote:
On Nov 8, 2023, at 7:06 PM, Philip Prindeville <philipp_subx@redfish-solutions.com> wrote:
...
I had a test client (Ubuntu 22.04) set up, and I was running tcpdump on the server (also Ubuntu, running Freeradius 3.0).
I had created a username & password on the Radius server, and if I tried to log into the client with those credentials, it failed.
But as soon as I created a "cut out" on the client (same username, but '*' password in the shadow file), I could log in because the server was no longer rejecting the authorization request.
I don't get it.  How would the server know if there was a local user or not?
There is debug output.  Read it.
http://wiki.freeradius.org/list-help
...
Nothing in the messages seems to be different, other than the things you'd expect (the message id, and the random seed that the password gets hashed with).  All other parts of the message looked to be identical.
How was the client conveying to the server that there wasn't a local account present?
You're carefully avoiding the only thing which will help you find out what's going on:  the debug output.
I'm not avoiding anything.  Many other lists don't like huge amounts of debug.  I was trying to be respectful.  Clearly this list has different expectations.  That's fine.  I wasn't aware.
...
*All* of the documentation says to run the server in debug mode.  It's the only way to understand issues, and fix them.
Here's the debug.  The password received isn't remotely what I typed ("password123"):

(0) Received Access-Request Id 227 from 172.21.12.17:54545 to 172.27.44.237:1812 length 96
(0)   User-Name = "pprindeville2"
(0)   User-Password = "\010\n\r\177INCORRE"
(0)   NAS-IP-Address = 127.0.1.1
(0)   NAS-Identifier = "sshd"
(0)   NAS-Port = 334707
(0)   NAS-Port-Type = Virtual
(0)   Service-Type = Authenticate-Only
(0)   Calling-Station-Id = "172.21.12.3"

Also note that the NAS-IP-Address is wrong.

And the entirety:

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/replicate
including configuration file /etc/freeradius/3.0/mods-enabled/detail
including configuration file /etc/freeradius/3.0/mods-enabled/expiration
including configuration file /etc/freeradius/3.0/mods-enabled/radutmp
including configuration file /etc/freeradius/3.0/mods-enabled/mschap
including configuration file /etc/freeradius/3.0/mods-enabled/detail.log
including configuration file /etc/freeradius/3.0/mods-enabled/soh
including configuration file /etc/freeradius/3.0/mods-enabled/preprocess
including configuration file /etc/freeradius/3.0/mods-enabled/sradutmp
including configuration file /etc/freeradius/3.0/mods-enabled/always
including configuration file /etc/freeradius/3.0/mods-enabled/attr_filter
including configuration file /etc/freeradius/3.0/mods-enabled/files
including configuration file /etc/freeradius/3.0/mods-enabled/linelog
including configuration file /etc/freeradius/3.0/mods-enabled/pap
including configuration file /etc/freeradius/3.0/mods-enabled/unpack
including configuration file /etc/freeradius/3.0/mods-enabled/realm
including configuration file /etc/freeradius/3.0/mods-enabled/unix
including configuration file /etc/freeradius/3.0/mods-enabled/logintime
including configuration file /etc/freeradius/3.0/mods-enabled/exec
including configuration file /etc/freeradius/3.0/mods-enabled/utf8
including configuration file /etc/freeradius/3.0/mods-enabled/expr
including configuration file /etc/freeradius/3.0/mods-enabled/cache_eap
including configuration file /etc/freeradius/3.0/mods-enabled/echo
including configuration file /etc/freeradius/3.0/mods-enabled/eap
including configuration file /etc/freeradius/3.0/mods-enabled/dynamic_clients
including configuration file /etc/freeradius/3.0/mods-enabled/ntlm_auth
including configuration file /etc/freeradius/3.0/mods-enabled/passwd
including configuration file /etc/freeradius/3.0/mods-enabled/chap
including configuration file /etc/freeradius/3.0/mods-enabled/digest
including files in directory /etc/freeradius/3.0/policy.d/
including configuration file /etc/freeradius/3.0/policy.d/control
including configuration file /etc/freeradius/3.0/policy.d/accounting
including configuration file /etc/freeradius/3.0/policy.d/debug
including configuration file /etc/freeradius/3.0/policy.d/canonicalization
including configuration file /etc/freeradius/3.0/policy.d/abfab-tr
including configuration file /etc/freeradius/3.0/policy.d/filter
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/moonshot-targeted-ids
including configuration file /etc/freeradius/3.0/policy.d/eap
including configuration file /etc/freeradius/3.0/policy.d/cui
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 = 5
	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
 }
}
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
 	require_message_authenticator = no
 	secret = <<< secret >>>
 	nas_type = "other"
 	proto = "*"
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
 }
 client localhost_ipv6 {
 	ipv6addr = ::1
 	require_message_authenticator = no
 	secret = <<< secret >>>
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
 }
 client home-devs-subnet {
 	ipaddr = 172.21.0.0/16
 	require_message_authenticator = no
 	secret = <<< secret >>>
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
 }
 client other-devs-subnet {
 	ipaddr = 172.27.0.0/16
 	require_message_authenticator = no
 	secret = <<< secret >>>
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
 }
Debugger not attached
systemd watchdog is disabled
 # Creating Auth-Type = mschap
 # Creating Auth-Type = digest
 # Creating Auth-Type = eap
 # Creating Auth-Type = PAP
 # Creating Auth-Type = CHAP
 # Creating Auth-Type = MS-CHAP
 # Creating Autz-Type = New-TLS-Connection
radiusd: #### Instantiating modules ####
 modules {
  # Loaded module rlm_replicate
  # Loading module "replicate" from file /etc/freeradius/3.0/mods-enabled/replicate
  # Loaded module rlm_detail
  # 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_expiration
  # Loading module "expiration" from file /etc/freeradius/3.0/mods-enabled/expiration
  # 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
  }
  # 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
  }
  # 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_soh
  # Loading module "soh" from file /etc/freeradius/3.0/mods-enabled/soh
  soh {
  	dhcp = yes
  }
  # 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
  }
  # 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_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_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_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_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_pap
  # Loading module "pap" from file /etc/freeradius/3.0/mods-enabled/pap
  pap {
  	normalise = yes
  }
  # Loaded module rlm_unpack
  # Loading module "unpack" from file /etc/freeradius/3.0/mods-enabled/unpack
  # 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_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_logintime
  # Loading module "logintime" from file /etc/freeradius/3.0/mods-enabled/logintime
  logintime {
  	minimum_timeout = 60
  }
  # Loaded module rlm_exec
  # Loading module "exec" from file /etc/freeradius/3.0/mods-enabled/exec
  exec {
  	wait = no
  	input_pairs = "request"
  	shell_escape = yes
  	timeout = 10
  }
  # Loaded module rlm_utf8
  # Loading module "utf8" from file /etc/freeradius/3.0/mods-enabled/utf8
  # Loaded module rlm_expr
  # Loading module "expr" from file /etc/freeradius/3.0/mods-enabled/expr
  expr {
  	safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /äéöüàâæçèéêëîïôœùûüaÿÄÉÖÜßÀÂÆÇÈÉÊËÎÏÔŒÙÛÜŸ"
  }
  # 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
  }
  # 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_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_dynamic_clients
  # Loading module "dynamic_clients" from file /etc/freeradius/3.0/mods-enabled/dynamic_clients
  # 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_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_chap
  # Loading module "chap" from file /etc/freeradius/3.0/mods-enabled/chap
  # Loaded module rlm_digest
  # Loading module "digest" from file /etc/freeradius/3.0/mods-enabled/digest
  instantiate {
  }
  # Instantiating module "detail" from file /etc/freeradius/3.0/mods-enabled/detail
  # Instantiating module "expiration" from file /etc/freeradius/3.0/mods-enabled/expiration
  # Instantiating module "mschap" from file /etc/freeradius/3.0/mods-enabled/mschap
rlm_mschap (mschap): using internal authentication
  # 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 "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 "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 "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 "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 "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 "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 "logintime" from file /etc/freeradius/3.0/mods-enabled/logintime
  # 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 "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 "etc_passwd" from file /etc/freeradius/3.0/mods-enabled/passwd
rlm_passwd: nfields: 3 keyfield 0(User-Name) listable: no
 } # 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 "sql" (see raddb/mods-available/README.rst)
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 44081
Listening on proxy address :: port 40590
Ready to process requests
(0) Received Access-Request Id 227 from 172.21.12.17:54545 to 172.27.44.237:1812 length 96
(0)   User-Name = "pprindeville2"
(0)   User-Password = "\010\n\r\177INCORRE"
(0)   NAS-IP-Address = 127.0.1.1
(0)   NAS-Identifier = "sshd"
(0)   NAS-Port = 334707
(0)   NAS-Port-Type = Virtual
(0)   Service-Type = Authenticate-Only
(0)   Calling-Station-Id = "172.21.12.3"
(0) # Executing section authorize from file /etc/freeradius/3.0/sites-enabled/default
(0)   authorize {
(0)     policy filter_username {
(0)       if (&User-Name) {
(0)       if (&User-Name)  -> TRUE
(0)       if (&User-Name)  {
(0)         if (&User-Name =~ / /) {
(0)         if (&User-Name =~ / /)  -> FALSE
(0)         if (&User-Name =~ /@[^@]*@/ ) {
(0)         if (&User-Name =~ /@[^@]*@/ )  -> FALSE
(0)         if (&User-Name =~ /\.\./ ) {
(0)         if (&User-Name =~ /\.\./ )  -> FALSE
(0)         if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/))  {
(0)         if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/))   -> FALSE
(0)         if (&User-Name =~ /\.$/)  {
(0)         if (&User-Name =~ /\.$/)   -> FALSE
(0)         if (&User-Name =~ /@\./)  {
(0)         if (&User-Name =~ /@\./)   -> FALSE
(0)       } # if (&User-Name)  = notfound
(0)     } # policy filter_username = notfound
(0)     [preprocess] = ok
(0)     [chap] = noop
(0)     [mschap] = noop
(0)     [digest] = noop
(0) suffix: Checking for suffix after "@"
(0) suffix: No '@' in User-Name = "pprindeville2", looking up realm NULL
(0) suffix: No such realm "NULL"
(0)     [suffix] = noop
(0) eap: No EAP-Message, not doing EAP
(0)     [eap] = noop
(0) files: users: Matched entry pprindeville2 at line 94
(0) files: EXPAND Hello, %{User-Name}
(0) files:    --> Hello, pprindeville2
(0)     [files] = ok
(0)     [expiration] = noop
(0)     [logintime] = noop
(0)     [pap] = updated
(0)   } # authorize = updated
(0) Found Auth-Type = PAP
(0) # Executing group from file /etc/freeradius/3.0/sites-enabled/default
(0)   Auth-Type PAP {
(0) pap: Login attempt with password
(0) pap: Comparing with "known good" Cleartext-Password
(0) pap: ERROR: Cleartext password does not match "known good" password
(0) pap: Passwords don't match
(0)     [pap] = reject
(0)   } # Auth-Type PAP = reject
(0) Failed to authenticate the user
(0) WARNING: Unprintable characters in the password.  Double-check the shared secret on the server and the NAS!
(0) Using Post-Auth-Type Reject
(0) # Executing group from file /etc/freeradius/3.0/sites-enabled/default
(0)   Post-Auth-Type REJECT {
(0) attr_filter.access_reject: EXPAND %{User-Name}
(0) attr_filter.access_reject:    --> pprindeville2
(0) attr_filter.access_reject: Matched entry DEFAULT at line 11
(0)     [attr_filter.access_reject] = updated
(0)     [eap] = noop
(0)     policy remove_reply_message_if_eap {
(0)       if (&reply:EAP-Message && &reply:Reply-Message) {
(0)       if (&reply:EAP-Message && &reply:Reply-Message)  -> FALSE
(0)       else {
(0)         [noop] = noop
(0)       } # else = noop
(0)     } # policy remove_reply_message_if_eap = noop
(0)   } # Post-Auth-Type REJECT = updated
(0) Delaying response for 1.000000 seconds
Waking up in 0.3 seconds.
Waking up in 0.6 seconds.
(0) Sending delayed response
(0) Sent Access-Reject Id 227 from 172.27.44.237:1812 to 172.21.12.17:54545 length 42
(0)   Reply-Message = "Hello, pprindeville2"
Waking up in 3.9 seconds.
...
...
Also, I've run "pam-auth-update --enable radius" to get pam_radius_auth.so plugged into the PAM stack, but how do I integrate it into /etc/nsswitch.conf as well?  This is on Ubuntu so I don't have authconfig/authselect which are RedHat only.
Ask the PAM people how PAM / nsswitch.conf works.  This isn't a FreeRADIUS issue.
Alan DeKok.