Changes
→Some Technical Details
* Before authenticating, IPv4 access to internet sites is not available on any port. Some local sites can be reached.
* You can ping (but not traceroute) without logging in. Ping tunneling works both locally and over the open internet. Some users have reported being temporarily banned from DHCP servers when ping tunneling before authenticating.
* All wireless networks (including the .1x networks) on campus now use [[rfc:1918|RFC-1918]] addresses from the 172.31.0.0/16 network. These are translated 1 to 1 with NAT into 198.82.x.x addresses for access outside the wireless network.
* IPv6 access to local and internet sites, including web access to [http://www.cns.vt.edu/ CNS] and Google, is completely unrestricted regardless of authentication status.
