> When you ran nmap, was it on your computer on the home network? It would be looking at ports open on local side, like port 80 is open for router admin.
Yes, but I used nmap on the FQDN not the local IP . .
> Did nmap report any others? Like 139 and 445? I think these are used for accessing USB storage. VR1600 supports FTP (port 21), SMB (ports 139 and 445). These are open on my VR1600.
PORT STATE SERVICE
21/tcp open ftp
25/tcp open smtp
53/tcp open domain
80/tcp open http
88/tcp filtered kerberos-sec
443/tcp open https
587/tcp open submission
993/tcp open imaps
1900/tcp open upnp
2525/tcp filtered ms-v-worlds
5000/tcp filtered upnp
8200/tcp open trivnet1
> You can use sites like portchecktool.com to check if specific ports are open or not.
Result: "Problem! I could not see your service on xxx.xxx.xxx.xxx on port (21)."
Using: https://hackertarget.com/nmap-online-port-scanner/
I get:
PORT STATE SERVICE
21/tcp filtered ftp
22/tcp filtered ssh
23/tcp filtered telnet
80/tcp open http
110/tcp filtered pop3
143/tcp filtered imap
443/tcp open https
3389/tcp filtered ms-wbt-server
- filtered being a little more reassuring . .
Thanks,
Phil.
