Bazy:

Thanks. I hope in the future version of auditd, it will be much easier to monitor user's activities.

On 9/3/07, Bazy bazy@goofy.celuloza.ro wrote:

Mag Gam wrote:

...

Is it possible to audit the Linux User Shell? I am trying to gather what commands a user is running no our systems. Can auditd handle this?

TIA

---

---

CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Hi Mag Gam,

I don't know if it can log what every user does... but it can watch a lot of things :) Here is an example of watching what happens in /tmp, the reads and writes (auditctl -w /tmp -p rw -k tmp-watch):

[root@goofy ~]# auditctl -l No rules

[root@goofy ~]# auditctl -w /tmp -p rw -k tmp-watch

[root@goofy ~]# auditctl -l LIST_RULES: exit,always watch=/tmp perm=rw key=tmp-watch

[root@goofy ~]# ausearch -k tmp-watch

time->Mon Sep 3 18:22:36 2007 type=PATH msg=audit(1188832956.932:43): item=0 name="." inode=14207425 dev=08:01 mode=041777 ouid=0 ogid=0 rdev=00:00 type=CWD msg=audit(1188832956.932:43): cwd="/tmp" type=SYSCALL msg=audit(1188832956.932:43): arch=40000003 syscall=5 success=yes exit=3 a0=95c1e40 a1=18800 a2=0 a3=95c29d8 items=1 ppid=31137 pid=31213 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=pts1 comm="ls" exe="/bin/ls" key="tmp-watch"

---

time->Mon Sep 3 18:25:02 2007 type=PATH msg=audit(1188833102.354:53): item=0 name="." inode=14207425 dev=08:01 mode=041777 ouid=0 ogid=0 rdev=00:00 type=CWD msg=audit(1188833102.354:53): cwd="/tmp" type=SYSCALL msg=audit(1188833102.354:53): arch=40000003 syscall=5 success=yes exit=3 a0=96e5010 a1=18800 a2=96e1458 a3=96e4ff8 items=1 ppid=31137 pid=31270 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=pts1 comm="ls" exe="/bin/ls" key="tmp-watch"

---

time->Mon Sep 3 18:25:11 2007 type=PATH msg=audit(1188833111.401:54): item=1 name="testme.hack" inode=14207429 dev=08:01 mode=0100664 ouid=500 ogid=500 rdev=00:00 type=PATH msg=audit(1188833111.401:54): item=0 name="/tmp" inode=14207425 dev=08:01 mode=041777 ouid=0 ogid=0 rdev=00:00 type=CWD msg=audit(1188833111.401:54): cwd="/tmp" type=SYSCALL msg=audit(1188833111.401:54): arch=40000003 syscall=5 success=yes exit=0 a0=bfebec4e a1=8941 a2=1b6 a3=8941 items=2 ppid=31137 pid=31271 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=pts1 comm="touch" exe="/bin/touch" key="tmp-watch"

What i did under uid 500 in the shell was: cd /tmp ls touch testme.hack

Like this you can watch under /bin with "-p rx" for example, and see what your users execute from /bin. You get the ideea :)

Your could add a watch on "/etc/shadow" with the arbitrary filterkey "shadow-file" that generates records for "reads, writes, executes, and appends" on "shadow":

auditctl -w /etc/shadow -k shadow-file -p rwxa

Use man auditctl, and take a look at /etc/audit/audit.rules.

BE CAREFUL!!! edit /etc/sysconfig/auditd and change the "AUDITD_CLEAN_STOP" to no, otherwise when you restart auditd all your rules will be wiped! _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos