External access

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While our many services are partitioned into several containers with their own IP addresses, College only allocates us couple of IP addresses with permissive firewall rules, currently 134.226.83.27. and 134.226.83.42.

The following tables summarizes the external Internet access allowed to some hosts by the College firewall:

IP address Host Inbound Outbound
134.226.83.19 services.cubeirc None None
134.226.83.20 admin None None
134.226.83.21 cubemail 80, 443, 143, 110, 993, 587, 995 80, 443, 143, 110, 993, 587, 995
134.226.83.22 cubestorage None None
134.226.83.23 cubewww None None
134.226.83.24 userweb 80, 443 80, 443
134.226.83.25 cubeirc 6667, 143 6667, 143
134.226.83.27 cube 22, 80, 443, 25, 113, 993, 6667, 53, 33434 Unfiltered
134.226.83.28 cuberoot None None
134.226.83.31 ldap None None

Note that these are simply the ports which we can open on our own firewall without College intervention. This table does not reflect our own firewall configuration, and therefore does not indicate which ports are actually open at any particular time (for example, College doesn't filter outbound Internet access on 134.226.83.27, but we do).