I think so but I can't see any input TCP sessions by using tcpdump on the box. I will try to put a specific term in my loopback firewall filter to catch the source addresses (if there are) ! thank you Regards; David
________________________________ De: Manu Chao [mailto:[email protected]] Date: mar. 21/07/2009 17:20 À: ROY David DTF/DERX Cc: [email protected] Objet : Re: [j-nsp] Strange LOGIN_FAILED message a bot is trying to access on your box On Tue, Jul 21, 2009 at 5:10 PM, <[email protected]> wrote: Hi all, I've a lot messages regarding a "user 4" : see after show log message Jul 21 16:18:50 myrouter login: LOGIN_PAM_AUTHENTICATION_ERROR: PAM authentication error for user 4 Jul 21 16:18:50 myrouter login: LOGIN_FAILED: Login failed for user 4 from host Jul 21 16:24:25 myrouter login: LOGIN_PAM_AUTHENTICATION_ERROR: PAM authentication error for user 4 Jul 21 16:24:25 myrouter login: LOGIN_FAILED: Login failed for user 4 from host Jul 21 16:30:00 myrouter login: LOGIN_PAM_AUTHENTICATION_ERROR: PAM authentication error for user 4 Jul 21 16:30:00 myrouter login: LOGIN_FAILED: Login failed for user 4 from host Jul 21 16:35:35 myrouter login: LOGIN_PAM_AUTHENTICATION_ERROR: PAM authentication error for user 4 Jul 21 16:35:35 myrouter login: LOGIN_FAILED: Login failed for user 4 from host Jul 21 16:41:10 myrouter login: LOGIN_PAM_AUTHENTICATION_ERROR: PAM authentication error for user 4 Jul 21 16:41:10 myrouter login: LOGIN_FAILED: Login failed for user 4 from host This message is usually logged when the authentication of a telnet session failed. But, here I don't have a user named "4". Moreover this message is periodic : every 5min35s and I don't have information regarding to the host. Usually we've the IP address : Jul 21 16:41:10 myrouter login: LOGIN_PAM_AUTHENTICATION_ERROR: PAM authentication error for user DAVID Jul 21 16:41:10 myrouter login: LOGIN_FAILED: Login failed for user DAVID from host 10.10.10.10 I tried to catch the TCP telnet session info, but there is no telnet session when this message is logged ! So it's seems that it's an internal process that generates it ! Did you experience this kind of message ? Thank you Regards, David ********************************* This message and any attachments (the "message") are confidential and intended solely for the addressees. Any unauthorised use or dissemination is prohibited. Messages are susceptible to alteration. France Telecom Group shall not be liable for the message if altered, changed or falsified. If you are not the intended addressee of this message, please cancel it immediately and inform the sender. ******************************** _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp ********************************* This message and any attachments (the "message") are confidential and intended solely for the addressees. Any unauthorised use or dissemination is prohibited. Messages are susceptible to alteration. France Telecom Group shall not be liable for the message if altered, changed or falsified. If you are not the intended addressee of this message, please cancel it immediately and inform the sender. ******************************** _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
