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14.2 > Network > 2ping (4.1)

2ping (bi-directional ping utility)

2ping is a bi-directional ping utility. It uses 3-way pings (akin to
TCP SYN, SYN/ACK, ACK) and after-the-fact state comparison between a
2ping listener and a 2ping client to determine which direction packet
loss occurs.

If you would like to quickly test 2ping against a remote listener
without setting one of your own up, there are several public test
listeners available. Try,, or

To run a listener, you can manually start one with e.g. "2ping --listen".
If you want to start a listener at boot, add a command like this to

su nobody -s /bin/sh -c 'exec /usr/bin/2ping --quiet --listen' &> /dev/null &

This requires: python3

Maintained by: B. Watson
Keywords: connectivity,inbound,outbound,troubleshooting
ChangeLog: 2ping


Source Downloads:
2ping-4.1.tar.gz (826a626bd8ac85fddaa7f54f87d7fc19)

Download SlackBuild:
2ping.tar.gz.asc (FAQ)

(the SlackBuild does not include the source)

Individual Files:

Validated for Slackware 14.2

See our HOWTO for instructions on how to use the contents of this repository.

Access to the repository is available via:
ftp git cgit http rsync

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