1. Make sure VISTA firewall is turned off.
2. Configure Norton to allow LW or FW full access:
Configuring Norton Internet Security
3. For some reason the default port 6346 is totally blocked for you. Question is whether it's due to your ISP or your personal ISP settings such as firewall/security settings, or something to do with your router/modem or software firewall.
4. p2p = peer to peer; from one user to another.

Sharing between two or more users.
5. Are you sure your modem/router is not a Westell? eg: Westell6100
6. Go to LW or FW's menu bar, Tools > Options > Advanced > Firewalls, and change both connection & listening ports to a higher one between 49152 - 65535 (64049 is a good one to try.) Then go to File menu -> Connect. (May need to set to Manual Port forward in options)