0
votes
3answers
642 views

Source Address / Source Port vs Destination Address / Destination Port

I am new to TCP/IP and trying hard to learn basics. Well, I really wonder about inbound rules and outbound rules of Firewall and concept of source adress:port, destination adress:port. For example I ...
1
vote
2answers
271 views

How to make my computer think an IP is somewhere else

I have a local app which code I do not own and tries to directly connect to some IP, let's say 123.45.67.890. For testing purposes, I would like to re-route that connection to somewhere else, another ...
1
vote
4answers
99 views

Is it tecnically incorrect to claim that TCP/IP connection was established with an IP address?

In case where an IP address is assigned to a cable modem and utilized by computers on the home network through a router connected to that cable modem is it tecnically incorrect to claim that TCP/IP ...
0
votes
2answers
200 views

How are local ip addresses separated from public ones?

How does tools like ping, or any other tool that uses the tcp/ip protocol know that for example 192.168.1.1 or 10.0.0.1 is a local ip address while 8.8.8.8 or 74.142.23.95 are public? are 192.168.x.x ...
1
vote
1answer
567 views

TCP\IP Packet Signature - how to identify such data packets?

I know of a program that can "carve" (look for) TCP IP Packets from raw binary data. The results it presents are the source and destination MAC addresses, the source and destination IP addresses and a ...
2
votes
0answers
658 views

Assign IP address to a Virtual Printer

Is it possible to assign an IP to a virtual PDF Printer? Is there any Virtual printer software that automatically can do this?
1
vote
1answer
1k views

Can't access HTTP server, but ping works in LAN

I encounter a problem when configure the connection. My computer resides in a LAN, I want to assign it a static IP address. Thus with the help of port mapping on the router, I will be able to access ...
5
votes
3answers
602 views

Why is a network ID not needed to connect to an IP address?

I know how IP basically works, and knows that an IP address composed of a network ID portion and a host ID portion, but when I type a IP address, say 8.8.8.8 into the web browser, I didn't supply any ...
9
votes
5answers
51k views

How to tell what MTU is being used in Windows XP

I'm suffering from a really weird problem where I randomly get "The connection to the server was reset" errors when trying to access web pages (HTTP error 12031 according to the Windows network ...
10
votes
18answers
8k views

Can the Internet work without DNS?

If we have an IP-based system of identifying nodes on the Internet why is there a need for DNS?