What Pools operate on port 80 or 443? My firewall blocks all ports except 80 and 443.  Are there any pools that accept inbound connections on these ports?
We ( https://wwww.bitlc.net ) primarily, and strongly recommend, use of port 80 mining. With 8080 and 8332 fallbacks, but only over IPv4...

The regular pool.bitlc.net:80 is fully accessible over both IPv4 and IPv6.
pool.bitlc.net:8080 and :8332 works to, both there is no reason to use them...