Gabor Szabo wrote:
I am trying to secure a new server and as I am not an a real security expert I'd be glad to get some inuput. This is a Fedore-3 based server (I already shut down cupd - why do they need this in a server anyway ?) I ran nmap on the server and got this:
Port State Service 22/tcp open ssh 55/tcp filtered isi-gl 80/tcp open http 135/tcp filtered loc-srv 137/tcp filtered netbios-ns 138/tcp filtered netbios-dgm 139/tcp filtered netbios-ssn 225/tcp open unknown 443/tcp open https 445/tcp filtered microsoft-ds 4444/tcp filtered krb524 12345/tcp filtered NetBus 12346/tcp filtered NetBus 27374/tcp filtered subseven
Port 22 and 80 are OK I guess I'll have to shut down the betbios and microsft-ds things, what are these? Samba ?
I'd guess that your ISP is blocking some of those ports, under the (not altogether outrageous) assumption that they can do no good. Get "hping2" and read about fire walking. It's a technique that will allow you to find out where the blocking firewall is.
Shachar
-- Shachar Shemesh Lingnu Open Source Consulting ltd. http://www.lingnu.com/
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