Excito BUBBA - 10 Reaching Bubba from Outside; Passing Traffic through Your Firewall

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10. REACHING BUBBA FROM OUTSIDE
Example on a home network setup
10.1. PASSING TRAFFIC THROUGH YOUR FIREWALL
A firewall protects your home computers from attacks from the outside,
by blocking traffic that is not directly requested from the inside. If you
have a hardware firewall (commonly called internet router or gateway)
installed between BUBBA and your internet connection, you have to
make the firewall let certain traffic through in order to get the BUBBA
functionality available from the outside. This is commonly referred to as
‘port forwarding’. Consult your firewall or gateway manual on how to do
this on your specific device. The following ports are required to be
forwarded in order to get the corresponding service to work:
Port number Service
name
Explanation
20 (TCP) FTP To make BUBBA’s FTP server available
from the outside
21 (TCP) FTP To make BUBBA’s FTP server available
from the outside
22 (TCP/UDP) SSH Remote login protocol – only for
advanced users
25 (TCP/UDP) SMTP Email, incoming and outgoing