i run nmap from one my server to another ( another IP) and i give this:
Starting nmap 3.93 (
http://www.insecure.org/nmap/ ) at 2006-10-30 10:02 EET
Initiating SYN Stealth Scan against ip
(ip) [1668 ports] at 10:02
Discovered open port 80/tcp on ip
Discovered open port 3389/tcp on ip
Discovered open port 53/tcp on ip
Discovered open port 3306/tcp on ip
Discovered open port 3128/tcp on ip
Discovered open port 110/tcp on ip
Discovered open port 139/tcp on ip
Discovered open port 587/tcp on ip
Discovered open port 221/tcp on ip
Discovered open port 993/tcp on ip
Discovered open port 445/tcp on ip
Discovered open port 995/tcp on ip
Discovered open port 1984/tcp on ip
Discovered open port 143/tcp on ip
The SYN Stealth Scan took 16.69s to scan 1668 total ports.
For OSScan assuming port 53 is open, 1 is closed, and neither are firewalled
Host ip (ip) appears to be up ... good.
Interesting ports on ip (ip):
(The 1653 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
25/tcp filtered smtp
53/tcp open domain
80/tcp open http
110/tcp open pop3
139/tcp open netbios-ssn
143/tcp open imap
221/tcp open fln-spx
445/tcp open microsoft-ds
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
1984/tcp open bigbrother
3128/tcp open squid-http
3306/tcp open mysql
3389/tcp open ms-term-serv
Device type: general purpose
Running: FreeBSD 5.X
OS details: FreeBSD 5.3-STABLE
TCP Sequence Prediction: Class=truly random
Difficulty=9999999 (Good luck!)
IPID Sequence Generation: Incremental
Nmap finished: 1 IP address (1 host up) scanned in 19.328 seconds
Raw packets sent: 1873 (75.5KB) | Rcvd: 1714 (78.9KB)
What is this Discovered open port and later open port?
thanx and sorry for my english