Copahost Forum

[irfansblog]

When you open your nmap you’re VPS (if it is hosted in Atlanta on GNAX), you’ll see tons of open ports:

Starting Nmap 4.53 ( http://insecure.org ) at 2008-07-16 14:44 EDT
Interesting ports on ...
Not shown: 50 filtered ports
PORT STATE SERVICE
2/tcp open compressnet
3/tcp open compressnet
4/tcp open unknown
5/tcp open rje
6/tcp open unknown
7/tcp open echo
8/tcp open unknown
10/tcp open unknown
12/tcp open unknown
14/tcp open unknown
16/tcp open unknown
17/tcp open qotd
18/tcp open msp
20/tcp open ftp-data
21/tcp open ftp
22/tcp open ssh
23/tcp open telnet
24/tcp open priv-mail
25/tcp open smtp
26/tcp open unknown
27/tcp open nsw-fe
28/tcp open unknown
29/tcp open msg-icp
30/tcp open unknown
31/tcp open msg-auth
32/tcp open unknown
33/tcp open dsp
34/tcp open unknown
35/tcp open priv-print
36/tcp open unknown
37/tcp open time
38/tcp open rap
39/tcp open rlp
40/tcp open unknown
41/tcp open graphics
42/tcp open nameserver
43/tcp open whois
44/tcp open mpm-flags
45/tcp open mpm
46/tcp open mpm-snd
47/tcp open ni-ftp
48/tcp open auditd
49/tcp open tacacs
50/tcp open re-mail-ck
51/tcp open la-maint
52/tcp open xns-time
53/tcp open domain

(and the list goes on and on........)
You’ll get similar results even if you shutdown your VPS (stop the container), so I'm guessing the host server must be doing something funny to make all these ports appear open.

Does anyone know why it does this or how to make nmap show me only the ports those are actually open?