Destination ports = (acl Safe_ports + acl SSL_portsacl + acl IPFire_http + acl IPFire_https)
Here starts a part of the definition of Squid's "Access Control Lists" (ACL). The default destination port regulates the incoming traffic. For example, if a webserver behind IPFire should not operate on port 80 HTTP but for example on port 94, this port must be entered in the appropriate section (for HTTPS in the "Allowed SSL ports").
If you want to enter a port range make sure there is no whitespace in the port range.
Anything after a # is a comment on the port(s).
For example:-
700-750 # Selected port range
and not
700 - 750 # Selected port range
Overview of the default ports:
Allowed standard Ports (one per line) Allowed SSL-Ports (one per line)
80 # http 443 # https
21 # ftp 563 # snews
443 # https
563 # snews
70 # gopher
210 # wais
1025-65535 # unregistered ports
280 # http-mgmt
488 # gss-http
591 # filemaker
777 # multiling http
800 # Squids port (for icons)