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CSE 588 - Spring 2002 - Tools |
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This page is intended describe (or at least point you to) tools which are useful for discovering information about networking protocols. More information can be found in the man pages for the various tools. I have linked to web versions of these. Some additional information can be found in a set of slides from CSE461. Another page of such tools is found at Georgia Tech. RFC 2398 lists other testing tools for TCP implementors.
Note: These are unix tools, available on the UW CSE machines (although some may require root access). Some of these are installed in /sbin or /usr/sbin which are not normally in your path. I have indicated the path to those incase you are having trouble finding them. The manpages I have linked to are not necessarily for the same version as we have installed locally, so you might want to check the local manpages. The links are there for reference, and should be pretty much accurate.
If people know about Windows versions, please let me know. I am not sure if cygwin has these commands or not.
| ping | Sends an echo packet to the named host. |
| /usr/sbin/tcpdump and WinDUMP | Used to watch TCP packets seen by your network interface card (note: tcpdump typically requires root access). |
| dig | Allows you to send domain name query packets to name servers. |
| nslookup | Allows you to query internet domain name servers (an earlier version of dig). |
| /sbin/route | Shows the IP routing table for your host. |
| /usr/sbin/traceroute | Shows the route your packets are taking to some remote host. |
| /sbin/ifconfig | A useful tool for determining what interfaces are configured and how. |
| netstat | Shows active network connections. |
| sting | A TCP-based network measurement tool. |
| tcpanaly | A tool for analyzing tcpdump output. |
| Ethereal | Ethereal is a free network protocol analyzer for Unix and Windows. |
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