public:networking_tools
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public:networking_tools [2020/10/11 12:59] – rhudak | public:networking_tools [2020/10/18 13:24] – lstolp | ||
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====== Linux Network Testing Tools ====== | ====== Linux Network Testing Tools ====== | ||
- | ===== Multipath Network Testing ===== | + | ===== Multipath |
To test different network paths from ship to shore using each WAN option directly. For this test we used a [[https:// | To test different network paths from ship to shore using each WAN option directly. For this test we used a [[https:// | ||
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=== Operating System === | === Operating System === | ||
- | | + | |
==== Magic Sauce ==== | ==== Magic Sauce ==== | ||
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==== Other Useful Commands ==== | ==== Other Useful Commands ==== | ||
+ | [[public: | ||
[[public: | [[public: | ||
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[[public: | [[public: | ||
- | ===== tcpdump ===== | ||
- | |||
- | |||
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- | If you ssh into a computer and want to use tcpdump to view traffic, ssh (22) can be excluded | ||
- | tcpdump -I [interface] -n ' | ||
- | 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/ | ||
- | |||
- | ===== NMAP ===== | ||
- | |||
- | |||
- | To see what computers are up, what OS they are running and what ports are open: | ||
- | nmap -sS -O [network] | ||
- | | ||
- | |||
- | ===== 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] | ||
public/networking_tools.txt · Last modified: 2024/01/25 03:31 by 127.0.0.1