I seem to be having an issue with my FTP (passive FTP). The thing to note is that whenever the router is freshly rebooted that everything works fine. No timeouts, no FTP problems or anything. However as time wears on, we slowly start to get FTP connection issues. Hosts that were able to FTP yesterday are no longer able to FTP today.
I don't feel the issue is with the FTP server as the server is able to receive FTP's just fine from inside the network. It is just these inbound FTP connections from the internet which continue to have issues.
Here's my relevant NAT configs:
ip nat inside source static tcp 192.168.0.1 20 18.104.22.168 20 extendable
ip nat inside source static tcp 192.168.0.1 21 22.214.171.124 21 extendable
Anyone know of anything which would cause issues such as this? Any NAT parameters or other things which might need to be adjusted?
Thanks for your help,