hi,
if I scan the WAN IP from my Sophos Firewall, i can see open Ports, like:
PORT STATE SERVICE
21/tcp open ftp
22/tcp filtered ssh
23/tcp filtered telnet
25/tcp filtered smtp
53/tcp filtered domain
80/tcp open http
110/tcp filtered pop3
111/tcp filtered rpcbind
135/tcp filtered msrpc
139/tcp filtered netbios-ssn
143/tcp filtered imap
199/tcp filtered smux
443/tcp open https
445/tcp filtered microsoft-ds
587/tcp filtered submission
993/tcp filtered imaps
995/tcp filtered pop3s
1025/tcp filtered NFS-or-IIS
1720/tcp filtered h323q931
1723/tcp filtered pptp
3306/tcp filtered mysql
3389/tcp filtered ms-wbt-server
5900/tcp filtered vnc
8080/tcp filtered http-proxy
8888/tcp filtered sun-answerbook
so 80,21, 443 are open if i trust nmap.
How can I close ports that are not open?
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