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tcpdump is a powerful command-line packet analyzer and traffic capture utility. It is useful to troubleshoot network problems.
Either install using the pakfire WUI or in a shell as root using:
pakfire install -y tcpdump
There is no web interface for this Addon. To run the Addon open the client console or terminal and access the IPFire box via SSH.
To obtain a list of possible commands:
The output is similar to this:
[root@ipfire ~]# tcpdump -h tcpdump version 4.9.2 libpcap version 1.8.1 OpenSSL 1.1.0j 20 Nov 2018 Usage: tcpdump [-aAbdDefhHIJKlLnNOpqStuUvxX#] [ -B size ] [ -c count ] [ -C file_size ] [ -E algo:secret ] [ -F file ] [ -G seconds ] [ -i interface ] [ -j tstamptype ] [ -M secret ] [ --number ] [ -Q in|out|inout ] [ -r file ] [ -s snaplen ] [ --time-stamp-precision precision ] [ --immediate-mode ] [ -T type ] [ --version ] [ -V file ] [ -w file ] [ -W filecount ] [ -y datalinktype ] [ -z postrotate-command ] [ -Z user ] [ expression ]