-3
votes
2answers
44 views

Switching to IPv6 - Do I need a router?

In the future, since every IP (IPv6 adress) is going to be global, we don't need to use NAT. So basically, why do I need a router on an IPv6-only global network? Why not just replace my router with a ...
6
votes
3answers
244 views

Two websites give different values for my IP

I just found something curious: http://whatismyip.org/ says my IP address is 82.44.14.246 http://www.whatismyip.com/ says my IP address is 31.52.118.197 I'm based in the UK and behind a router ...
1
vote
2answers
433 views

Firewall in front of device with public IP address

Is it possible to have a firewall in front of a device with a public IP address without getting in the middle of NAT? I have a server that I need to put on the internet, but I want to put a firewall ...
11
votes
1answer
10k views

How does a NAT server forward ping ICMP echo reply packets to users?

NAT uses an IP address port number combination to hash the outgoing requests. Since ping requests consist of ICMP echo request packets, they do not have any associated port number. How does a NAT ...
6
votes
5answers
12k views

Is it possible to host a web server from behind a NAT

My PC is behind a NAT router that has a public IP address. If I want to host a website then I believe I need a domain name which I can purchase from some site which would pledge to resolve all DNS ...
2
votes
2answers
3k views

Difference between intranet IP Address and internet IP Address

My computer has 2 IP Addresses, one is 192.168.1.100 and the other is 78.x.x.x. If connecting to a socket, what IP address would a program outside of my network use, and how would it differentiate ...
4
votes
3answers
12k views

Is it possible to get the NAT Ip Address?

is it possible to get my nat ip address across the Internet? I know I can see my ISP address but not my internal address. I remember seeing this done one time but I am thinking it was a java applet ...