Network troubleshooting, any experts?

[Jeff Vian]

duncan brown wrote:

>Jeff Vian said:
>  
>
>>established while new connections can be blocked.  I use this on both
>>ftp (allowing only port 20) and http (allowing only port 80).
>>    
>>
>
>just to ensure that no green sticks here (new people) get confused, ftp is
>21, not 20.
>
>you can check what port and protocol is for what service in /etc/services
>  
>
Sorry , I reversed the data and control ports when I typed that above.  :-(

My firewall lists 21 as allowed and only allows 20 as a related connection.