Okay, so I've eliminated the router as the problem.. when I run nmap from the server I get:
Starting Nmap 4.62 (
http://nmap.org ) at 2009-05-07 03:04 CDT
Interesting ports on localhost (127.0.0.1):
Not shown: 1695 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp open smtp
80/tcp open http
110/tcp open pop3
111/tcp open rpcbind
139/tcp open netbios-ssn
445/tcp open microsoft-ds
631/tcp open ipp
901/tcp open samba-swat
2049/tcp open nfs
3306/tcp open mysql
5901/tcp open vnc-1
6001/tcp open X11:1
6667/tcp open irc
8118/tcp open privoxy
8888/tcp open sun-answerbook
9050/tcp open tor-socks
10000/tcp open snet-sensor-mgmt
50000/tcp open iiimsf
Nmap done: 1 IP address (1 host up) scanned in 0.232 seconds
When I disconnected my router and ran nmap from a machine outside the LAN I got:
Starting Nmap 4.11 (
http://www.insecure.org/nmap/ ) at 2009-05-07 02:03 CDT
Interesting ports on cpe-70-112-6-216.austin.res.rr.com (70.112.6.216):
Not shown: 1657 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp filtered smtp
80/tcp open http
110/tcp open pop3
111/tcp open rpcbind
135/tcp filtered msrpc
136/tcp filtered profile
137/tcp filtered netbios-ns
138/tcp filtered netbios-dgm
139/tcp filtered netbios-ssn
445/tcp filtered microsoft-ds
593/tcp filtered http-rpc-epmap
901/tcp open samba-swat
1720/tcp filtered H.323/Q.931
1723/tcp filtered pptp
2049/tcp open nfs
5901/tcp open vnc-1
6001/tcp open X11:1
6667/tcp open irc
8888/tcp open sun-answerbook
10000/tcp open snet-sensor-mgmt
50000/tcp open iiimsf
Nmap finished: 1 IP address (1 host up) scanned in 5.173 seconds
So, what does this mean? Why is port 445 "filtered" and how can I open it?
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