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Asked by eric1508 in Samba File Server, Linux Administration, Ubuntu
The basics of the situation are this... I setup a simple Samba Server running off of Ubuntu Server 7.10 for a real estate client of mine. They are just using it as a simple file server mapped to their PC's and allowing their Xerox machine to scan to it. It's worked great for a few weeks now but I just logged into it remotely and noticed some weird things. For one I am getting a message when I use the ls command. The message says something like... ls: unrecognized prefix: do and then something about LS_COLORS environment. I found that I can use unset LS_COLORS to temporarily fix this but it's not really the issue. I then noticed a new file in the home directory called office. I never created this file so I was suspicious. So I opened it and saw one file inside called z. I opened this in vi and saw a bunch of jibber jabber and then thing like... cleaning utmp file finished and other things about cleaning tmp files and log files. Then I googled this z file and saw it referring to being rooted and things like Samba scanners etc...
So it looks pretty sketchy. I have an image of the drive soon after I finished installing the server software and this would hopefully get it to a state before this occurred. Assuming this is true what kinds of things do I need to do (other than changing passwords and such) to prevent this from happening in the future. I know this is a HUGE question and their are many options but I am just looking for some general help in this area. My experience is strong in general computing but I am somewhat new to Linux and Samba. Thanks in advance for your help, Eric.
20091111-EE-VQP-92 / EE_QW_2_20070628
