step 1: Change the root password step 2: Remove all those "holy" services step 3: Install SSH step 4: Firewall the machine so that it only accepts SMTP traffic from the outside world and SSH traffic from a couple of specific addresses step 5: Use a tool like tripwire to make a snapshot, wait a week, rerun it again and see if anything changes. just some ideas... Tim. -----Original Message----- From: Marc Hughes [mailto:hughesm@tomsnyder.com] Sent: Friday, October 05, 2001 1:08 PM To: wlug@wlug.org Subject: [Wlug] Vunerable Machine Picture This: You're sitting at your desk on a warm friday morning. You get a call from the webmaster about a linux box, so you head over to help him out. The webmaster is a bright guy, but a microsoft guy. Very little linux experience at all, in fact the box was set up for him by someone no longer in the company. After figuring out what this box does (acts as a sendmail SMTP & pop3 server for bulk newletters... [not spam] ) you realize it has easily guessable passwords, is outside the firewall, and is running at least one vunerable service (an old POP2 daemon) and some questionable services (sun RPC and appletalk). To top it all off... this box is an old powerPC... My question: What should I do to make sure it hasn't been already cracked? Other Problems: I don't have to time to do a reinstall and set it up correctly anytime soon (maybe in a week I could). It needs to continue working like it has for at least another week (we just sent out a newsletter, and it processes remove requests that trickle in) To free up disk space, the logs were regularly deleted... no current logs exist. It's not my box, so I need to be sensitive of the office politics so no one says something like, "Well, since we can't secure linux, NO MORE LINUX" -Marc _______________________________________________ Wlug mailing list Wlug@mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug
On Fri, 2001-10-05 at 13:40, Keller, Tim wrote:
step 1: Change the root password
Done
step 2: Remove all those "holy" services
Done
step 3: Install SSH
Still have to do ... getting weird library conflicts
step 4: Firewall the machine so that it only accepts SMTP traffic from the outside world and SSH traffic from a couple of specific addresses
TODO
step 5: Use a tool like tripwire to make a snapshot, wait a week, rerun it again and see if anything changes.
Good, but still, how do I tell if it's already been rooted by 3l33t h4x0rs? And I guess an even bigger concern is the office politics things. How do I bring this to the big-wigs in a "good" light?
If this is a RedHat machine, run rpm -V. Some h4x0rs know how to hack the databases, but it may still catch some nasty stuff. ccb
OK - another is a series of product recomendation questions... Anyone have a favorite graphical threaded email reader that supports multiple POPs and/or IMAP? This, of course, excludes Netscape (can't have multiple POPs nor a mix of POP and IMAP accounts). I'm currently using the KDE mail app that comes with RedHat 6.2 (will be upgrading to RH 7.1 in about 10 minutes), but it isn't exactly stellar... You can't do much of anything while it cheks for new mail, and it isn't threaded. Regards, Steve ______________________________ Stephen C. Daukas stephen@daukas.com (508) 845-9809 - Home (508) 845-5015 - Fax (508) 612-2149 - Mobile
On Fri, 5 Oct 2001, Stephen C. Daukas wrote: <snip>
Anyone have a favorite graphical threaded email reader that supports multiple POPs and/or IMAP?
<snip> I'm partial to fetchmail for delivering email from multiple sources to my machine. You can take your pick of the actual reader. I prefer pine, because, although it's not fancy, it does a lot of things right. Bill
Anyone have a favorite graphical threaded email reader that supports multiple POPs and/or IMAP?
About 6 months ago I stumbled across an awesome GTK+ mail/news reader very similar in look to Netscape Messenger (and far superior to XFMail) called Sylpheed (http://sylpheed.good-day.net/). It'll handle as many accounts as you want, supports threading and image view through gdk-pixbuf, is extremely fast (and decently configurable), and I've never had it crash on me. Some distributions are starting to pick it up now, and it's included in Mandrake 8.1, though I usually compile myself from source. I'd suggest giving it a look if it's an X app you're looking for. Brian J. Conway dogbert@clue4all.net "LINUX is obsolete" - Andrew S. Tanenbaum, creator of Minix - Jan 29, 1992
participants (6)
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Bill Mills-Curran -
Brian J. Conway -
ccb＠acm.org -
Keller, Tim -
Marc Hughes -
Stephen C. Daukas