Hello:
I have a couple questions. First, I'll explain what I did:
I set up iptables and removed all unwanted services. Iptables blocks
everything, then only opens what it wants. I also use the addrtype
module to limit broadcast and unspec addresses, etc. I also do some
malformed packet work where I just drop everything that looks malformed
(mainly by the flags).
2) I secured ssh: blocked root logins, set it up so only users in the
sshusers group can connect, and set it only to allow ppk.
3) I installed aid.
4) disabled malformed packets and forwarding/etc in sysctl.
This is a basic web server that runs email, web and a couple other
things. It's only running on a linode512, so I don't have the ability to
set up a ton of stuff; I also think that would make things more of a
mess. What else would be recommended?
Also, I'm looking to add something to the web server; sometimes I notice
that there are a lot of requests from people scanning for common urls
like wordpress/phpbb3/etc, what kind of preventative measures exist for
this?

--
Take care,
Ty
http://tds-solutions.net
The aspen project: a barebones light-weight mud engine:
http://code.google.com/p/aspenmud
He that will not reason is a bigot; he that cannot reason is a fool; he that dares not reason is a slave.

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