I just bought a PIX 501 for use at my home, and am having trouble understanding how I can use some P2P software correctly.
I have a PPPoE connection, and would like to foreward ports 411 and 412 to my PC, address 192.168.100.25.
Everything works well until I open up the ports on the outside interface to the inside. I always have to create a translation for my PC, but I don't have an extra public IP at my disposal for this. Could someone explain to me how to do it? How can I use NAT if the outside interface is always changing? I can't see how to code it, or visualize it either! My Linksys router was so easy compared to this.
Any help would be appreciated.
Thanks