> -----Original Message----- > From: centos-bounces at centos.org > [mailto:centos-bounces at centos.org] On Behalf Of Geerd-Dietger Hoffmann > Sent: Saturday, December 12, 2009 10:18 PM > To: CentOS mailing list > Subject: Re: [CentOS] Deleting contents of /tmp on shutdown > > On Sun, Dec 13, 2009 at 3:10 AM, Thomas Dukes > <tdukes at sc.rr.com> wrote: > >> > Today, I found upd.pl in my tmp directory. The date was > oct 09. I > >> > also found my /etc/passwd and /etc/shadow had been changed > >> with a user > >> > of 0Profile added. I deleted the old files and restored > those from > >> > backup. I ran my chkrootkit and installed mod_security. > >> SSH is not > >> > running so I don't know how this happened. > >> > >> Perhaps your system is not as simple as you think it is. ;-/ > >> > >> --keith > > > > > > Thanks, Keith! > > > > Guess I'd better brush up on my vi commands in case I have to boot > > from a rescue disk. :-) > > All you need is [Esc]q! :) > > > > > Just guessing here, but to do this, I need to add: > > > > tmpfs /tmp tmpfs size=100M,mode=0755 0 0 To my /etc/fstb > and cross my > > fingers? > > I would make it a little bigger as 100M depending on how much > memory you have. And the mode should be the same as /tmp > would normally be => > mode=777 :) I have 1GB of RAM. What would be a good size? > > If you have been hacked, like it seams you have, you should > first find out how the guy got in. Do you have a webserver > running? Firewall enabled? Then just to be safe I would > always reinstall as you never know what he might have done. The udp.pl file was owned by apache. Not sure that would matter. I have no cluse as to how it got there. The date on the file was oct 09 and those logs have already been rotated out. > > Then you can modify the tmp in fstab > > Cheers Didi Running a full backup now. When complete, I will make the changes to fstab. Thanks!!