Disabling log entries for rejected users
Hi guys, I use freeradius for authenticating DHCP/PPPoE clients connected to Mikrotik routers. Freeradius uses users files, not SQL database. If I disable some user in my management software, the "Accept" entry in proper "users" file is not generated. The access request for such user is logged: Jan 13 09:22:13 radsrv freeradius[2152]: Login incorrect (rlm_chap: Clear text password not available): [blockeduser/<CHAP-Password>] (from client mikrotik-main port 0 cli 194.182.13.200) After adding rejects for blocked users, for example: blockeduser Auth-Type := Reject The message still appears in the log file: Jan 13 09:26:14 radsrv freeradius[2152]: Login incorrect: [blockeduser/<CHAP-Password>] (from client mikrotik-main port 0 cli 194.182.13.200) How can I disable log etries for blocked/rejected users? Regards!
On Jan 13, 2016, at 3:39 AM, Michał B <bialyy@o2.pl> wrote:
If I disable some user in my management software, the "Accept" entry in proper "users" file is not generated. The access request for such user is logged:
Jan 13 09:22:13 radsrv freeradius[2152]: Login incorrect (rlm_chap: Clear text password not available): [blockeduser/<CHAP-Password>] (from client mikrotik-main port 0 cli 194.182.13.200)
Because you set "auth = yes" in the "log" section of radiusd.conf.
After adding rejects for blocked users, for example: blockeduser Auth-Type := Reject
The message still appears in the log file: Jan 13 09:26:14 radsrv freeradius[2152]: Login incorrect: [blockeduser/<CHAP-Password>] (from client mikrotik-main port 0 cli 194.182.13.200)
How can I disable log etries for blocked/rejected users?
Configure the server to not log bad passwords. See the "log" section. Alan DeKok.
Ok, let me explain some more details about my situation. Maybe you will be able to help me, give some good idea. Yes, I have settings "auth = yes" and "auth_badpass = yes", because I need them. Imagine two different situations about denied clients: 1. Technician has set wrong login or password on authenticated device. I need messages in log, for debugging reason. 2. The user device has been blocked by administrator (no payment, or something like that). The device is trying to authenticate every second, filling radius logs with tons of unnecessary messages. I want to get rid of messages coming from situations like 2, but still have messages from situations like 1. Regards!
On Jan 14, 2016, at 2:59 AM, Michał B <bialyy@o2.pl> wrote:
Ok, let me explain some more details about my situation. Maybe you will be able to help me, give some good idea.
Yes, I have settings "auth = yes" and "auth_badpass = yes", because I need them.
OK...
Imagine two different situations about denied clients:
1. Technician has set wrong login or password on authenticated device. I need messages in log, for debugging reason. 2. The user device has been blocked by administrator (no payment, or something like that). The device is trying to authenticate every second, filling radius logs with tons of unnecessary messages.
I want to get rid of messages coming from situations like 2, but still have messages from situations like 1.
You told it to log rejected authentications, and it's doing that. If you want to have finer control over the logs, use the "linelog" module. Configure the linelog module to run only when you want rejects to be logged. Alan DeKok.
On Thu, Jan 14, 2016 at 08:59:31AM +0100, Micha?? B wrote:
Imagine two different situations about denied clients:
1. Technician has set wrong login or password on authenticated device. I need messages in log, for debugging reason. 2. The user device has been blocked by administrator (no payment, or something like that). The device is trying to authenticate every second, filling radius logs with tons of unnecessary messages.
I want to get rid of messages coming from situations like 2, but still have messages from situations like 1.
I don't remove prohibited users from the authentication DB. I just set them to use IPs from a pool which NATs all web traffic to a webserver whose error document is a page explaining that they are not authorized to use the system for one of several possible reasons. They get a link to a customer portal where they can resolve the no payment situation and a phone number to call if they don't think they have a billing issue. It cuts way down on bad login attempts, and tends to lead to the resolution of the underlying issue. It's not a FreeRADIUS technical solution, but it could help to achieve your goal of smaller logs. -- Scott Lambert KC5MLE Unix SysAdmin lambert@lambertfam.org
Hi Scott, This is a very good idea, I will go through this. Thanks! Regards, Mike On 2016-01-15 00:24, Scott Lambert wrote:
I don't remove prohibited users from the authentication DB. I just set them to use IPs from a pool which NATs all web traffic to a webserver whose error document is a page explaining that they are not authorized to use the system for one of several possible reasons. They get a link to a customer portal where they can resolve the no payment situation and a phone number to call if they don't think they have a billing issue.
It cuts way down on bad login attempts, and tends to lead to the resolution of the underlying issue. It's not a FreeRADIUS technical solution, but it could help to achieve your goal of smaller logs.
Dear FreeRadius friends, It would be useful to have a more detailed description of the implementation of this concept. It would make a nice howto. Is it possible to provide? On Fri, Jan 15, 2016 at 03:24:57PM +0100, Michał B wrote:
Hi Scott,
This is a very good idea, I will go through this. Thanks!
Regards, Mike
I don't remove prohibited users from the authentication DB. I just set them to use IPs from a pool which NATs all web traffic to a webserver whose error document is a page explaining that they are not authorized to use the system for one of several possible reasons. They get a link to a customer portal where they can resolve the no payment situation and a phone number to call if they don't think they have a billing issue.
It cuts way down on bad login attempts, and tends to lead to the resolution of the underlying issue. It's not a FreeRADIUS technical solution, but it could help to achieve your goal of smaller logs.
On 2016-01-15 00:24, Scott Lambert wrote: - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
-- Met vriendelijke groeten, With kind regards, Mit freundlichen Gruessen, De jrus wah, Will ************************************* Powered by .... (__) \\\'',) \/ \ ^ .\._/_) www.FreeBSD.org
On Fri, Jan 15, 2016 at 03:40:15PM +0100, Willy Offermans wrote:
It would be useful to have a more detailed description of the implementation of this concept. It would make a nice howto. Is it possible to provide?
Lookup user in some backend database. If result found then set Tunnel-Private-Group-Id appropriately, or uses a different ippool, etc. Matthew -- Matthew Newton, Ph.D. <mcn4@le.ac.uk> Systems Specialist, Infrastructure Services, I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom For IT help contact helpdesk extn. 2253, <ithelp@le.ac.uk>
My every client is configured like this: login Cleartext-Password := "pass", Calling-Station-Id == "04:18:D6:84:F5:91", NAS-Identifier =~ "mt-pppoe-.*", Framed-Protocol == PPP Framed-IP-Address = 188.111.22.12, Framed-IP-Netmask = 255.255.255.192, Mikrotik-Address-List = "clients_tariff3" The key is Mikrotik-Address-List. This attribute is used for tariff classification by couple of firewall rules. I can put any rejected user into "clients_blocked" address list and create firewall rule which will drop traffic from this user or redirect to web page for blocked clients. Regards! On 2016-01-15 15:40, Willy Offermans wrote:
Dear FreeRadius friends,
It would be useful to have a more detailed description of the implementation of this concept. It would make a nice howto. Is it possible to provide?
participants (5)
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Alan DeKok -
Matthew Newton -
Michał B -
Scott Lambert -
Willy Offermans