0
votes
1answer
108 views

Is there a tool or website to generate DNS query packets for looking up the IP address of a hostname?

Is there a tool or web site where I can plug in some values and have it generate the bytes for a DNS query to look up the IP address of a hostname? Preferably one where it explains how the values ...
3
votes
1answer
221 views

Relation between a packet and a frame over the network

I am learning how networks work and I have a question. What is actually sent over the network? A packet/datagram or a frame? I believe it is a packet. If so, let's say Computer A wants to communicate ...
1
vote
1answer
566 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 ...
6
votes
5answers
7k views

How do IP answer packets reach their destination inside of a private LAN?

This is a little theory question that has been confusing me for a pretty long time. Basically, if we are inside of a private LAN, and we want incoming packets to reach, for example, an HTTP server ...
0
votes
2answers
4k views

Minimum size of the data part of TCP segment

My question has two parts: I know that the "data" part of an Ethernet frame can be 46~1500 bytes. Considering the IP header of 20 bytes + TCP header of 20 bytes, the minimum "data" size of a TCP ...
0
votes
2answers
2k views

Size of an IP Packet

What is the complete size of an IP Packet?