ICMP: Difference between revisions

Help

Content added Content deleted

Inline

Revision as of 19:03, 19 July 2006

ICMP is the Internet Control Message Protocol

You can read RFC 792 for a full explanation.

The well-known ping command is a type of ICMP request.

Packet Layout:

 0                   1                   2                   3

    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

   +-------------------------------+-------------------------------+

   |     Type      |     Code      |          Checksum             |

   +-------------------------------+-------------------------------+

   |           Identifier          |        Sequence Number        |

   +-------------------------------+-------------------------------+

   |                      Data ...

   +---------------------------------------------

Type 8 = echo request. Type 0 = echo reply.

Links:

Using ICMP tunneling to steal Internet

Icmp.pdf

PingTunnel

related: TCP,IP,ping

@@ Line 1: / Line 1: @@
+ICMP is the [[Internet|'''I'''nternet]] '''C'''ontrol '''M'''essage [[:Category:Protocols|'''P'''rotocol]]
-ICMP is the INTERNET CONTROL MESSAGE PROTOCOL
-you can read the [http://info-x.co.uk/rfcview.asp?id=792 RFC] for a full explonation.
+You can read [http://info-x.co.uk/rfcview.asp?id=792 RFC 792] for a full explanation.
+The well-known [[ping]] command is a type of ICMP request.
-there are lots of other sites about this like [[wikipedia:ICMP]]
+Packet Layout:
-[[ping]] is a type of ICMP
 <pre>
@@ Line 25: / Line 25: @@
    +---------------------------------------------
+Type 8 = echo request. Type 0 = echo reply.
 </pre>
-related: [[TCP]]
-Links: [http://64.233.161.104/search?q=cache:nulldigital.net/blog/view.php%3Fid%3D41+ Using ICMP tunneling to steal Internet], [http://www.eventhelix.com/RealtimeMantra/Networking/Icmp.pdf Icmp.pdf]
+Links:
+[http://64.233.161.104/search?q=cache:nulldigital.net/blog/view.php%3Fid%3D41+ Using ICMP tunneling to steal Internet]
+[http://www.eventhelix.com/RealtimeMantra/Networking/Icmp.pdf Icmp.pdf]
+[http://www.cs.uit.no/~daniels/PingTunnel/ PingTunnel]
+related: [[TCP]],[[IP]],[[ping]]
 [[Category:Protocols]]

Revision as of 19:03, 19 July 2006

Recent changes