topic Re: telnet log? in Operating System - HP-UX

telnet log?

lawrenzo_1 — Tue, 17 May 2005 15:32:18 GMT

Hello,

I am working a request for a user who wish's to know if anyone has killed any process on a server (hp100)

I logged onto hp100 and checked the lastb -R command to see who was logged on at the time stated. There was an oracle user on the system at that time.

The sh_history file has no kill commnad for the oracle user.

the lastb command shows that the oracle user logged on from hp101.

How can I find out who telnet to hp100 from hp101 at a known time?

Many Thanks.

Lawzo

Re: telnet log?

Tony Scully_2 — Tue, 17 May 2005 15:38:04 GMT

You can log telnet sessions by running inetd with the -l option on, but this will only help you in the future. No way of tracing back I think.

Tony

Re: telnet log?

Ian Kidd_1 — Tue, 17 May 2005 19:19:11 GMT

lastb is for failed or "bad" login attempts. `last -R` would show successful logins. if nothing shows up in their shell history, perhaps they then used `su` to switch to another user? you can check /var/adm/syslog/syslog.log and see if that happened. otherwise, the only way at this point that I can see is to start "backtracking" - doing research on hp101 (checking last and syslog.log) and seeing where this will lead you. it'll be pretty tedius

Re: telnet log?

lawrenzo_1 — Tue, 17 May 2005 20:25:52 GMT

ok so I run last -R and I don't get the information for the date required:

message is

wtmp degins Tue May 17 04:00

how do I view preivous logins?

Thanks

Re: telnet log?

Joseph Loo — Tue, 17 May 2005 21:06:55 GMT

hi,

as the others have mentioned, unless u have turn on logging for telnet connections in /var/adm/syslog/syslog.log (by using "-l" option in INETD_ARGS in /etc/rc.config.d/netdaemon) or from /var/adm/btmp (bad login) and /var/adm/utmp (logins), u will not be able to view who have log on before.

just like to know what is the permission granted for the 2 login attempt files:

# ll /var/adm/*tmp

regard.

Re: telnet log?

lawrenzo_1 — Tue, 17 May 2005 21:34:37 GMT

root:/var/adm # ll /var/adm/*tmp
-rw------- 1 root other 183120 May 17 21:05 /var/adm/btmp
-rw-r--r-- 1 adm adm 391 May 12 02:04 /var/adm/dtmp
-rw-rw-r-- 1 adm adm 3600 May 18 02:22 /var/adm/wtmp

how do I view previous login attemtps prior to the info in the latest wtmp

Thanks man

Re: telnet log?

Joseph Loo — Tue, 17 May 2005 21:54:58 GMT

hi,

the permission granted for the login attempts files looks alright. except what is /var/adm/dtmp?

the thing is that wtmp (logins) was probably "null" and thus your chances of finding who login on which day/time is quite slim judging from the size of that file.

btw, user may execute script with the kill command thus .sh_history may not necessary show up that command.

regards.

Re: telnet log?

Patrick Wallek — Tue, 17 May 2005 22:16:10 GMT

The only way to view older logins is to restore wtmp from a backup.

Restore it to a different directory and then use fwtmp (I think) to convert the wtmp binary file into a regular readable text file.

Check the man page of fwtmp for details.

Re: telnet log?

lawrenzo_1 — Tue, 17 May 2005 22:27:27 GMT

Thnaks all, I have located the required file as we have house keeping script that makes a copy.