User Tools

Site Tools


public:networking_tools

This is an old revision of the document!


Linux Network Testing Tools

Multipath Network Testing

To test different network paths from ship to shore using each WAN option directly.

tcpdump

If you ssh into a computer and want to use tcpdump to view traffic, ssh (22) can be excluded

tcpdump -I [interface] -n 'port!22'

Capture traffic leaving a host

tcpdump -pi [interface] src host [hostname]

Watch for traffic leaving one network and entering two other networks

tcpdump -pi [interface] src net [network] and dst net [network2] or [network3]
tcpdump -pi [interface] src net 128.128.252.0/28 and dst 192.168.11.0/24 or 192.168.12/24

NMAP

To see what computers are up, what OS they are running and what ports are open:

nmap -sS -O [network]    ie: nmap -sS -O 192.168.11.0

iftop

To look at https traffic on the science network:

iftop -i [interface] -f "dst port 443" 

iPerf

Need to setup a server (sender) and client (listener)

On shore just listen
       iperf -s -u
On shore listen on a certain port    
    iperf -s -u -p 55437
From ship, send 7 M
   iperf -c [shoreip number]  -u -t 120 -b 7M
public/networking_tools.1602326040.txt.gz · Last modified: 2024/01/25 03:32 (external edit)

Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki