forked from osmocom/wireshark
229 lines
6.5 KiB
Plaintext
229 lines
6.5 KiB
Plaintext
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=head1 NAME
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sshdump - Provide interfaces to capture from a remote host through SSH using a remote capture binary.
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=head1 SYNOPSIS
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B<sshdump>
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S<[ B<--help> ]>
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S<[ B<--version> ]>
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S<[ B<--extcap-interfaces> ]>
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S<[ B<--extcap-dlts> ]>
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S<[ B<--extcap-interface>=E<lt>interfaceE<gt> ]>
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S<[ B<--extcap-config> ]>
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S<[ B<--extcap-capture-filter>=E<lt>capture filterE<gt> ]>
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S<[ B<--capture> ]>
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S<[ B<--fifo>=E<lt>path to file or pipeE<gt> ]>
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S<[ B<--remote-host>=E<lt>IP addressE<gt> ]>
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S<[ B<--remote-port>=E<lt>TCP portE<gt> ]>
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S<[ B<--remote-username>=E<lt>usernameE<gt> ]>
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S<[ B<--remote-password>=E<lt>passwordE<gt> ]>
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S<[ B<--sshkey>=E<lt>public key path<gt> ]>
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S<[ B<--remote-interface>=E<lt>interfaceE<gt> ]>
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S<[ B<--remote-capture-command>=E<lt>capture commandE<gt> ]>
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B<sshdump>
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S<B<--extcap-interfaces>>
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B<sshdump>
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S<B<--extcap-interface>=E<lt>interfaceE<gt>>
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S<B<--extcap-dlts>>
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B<sshdump>
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S<B<--extcap-interface>=E<lt>interfaceE<gt>>
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S<B<--extcap-config>>
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B<sshdump>
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S<B<--extcap-interface>=E<lt>interfaceE<gt>>
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S<B<--fifo>=E<lt>path to file or pipeE<gt>>
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S<B<--capture>>
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S<B<--remote-host=myremotehost>>
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S<B<--remote-port=22>>
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S<B<--remote-username=user>>
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S<B<--remote-interface=eth2>>
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S<B<--remote-capture-command='tcpdump -U -i eth0 -w-'>>
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=head1 DESCRIPTION
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B<Sshdump> is a extcap tool that allows one to run a remote capture
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tool in a SSH connection. The requirement is that the capture
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executable must have the capabilities to capture from the wanted
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interface.
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The feature is functionally equivalent to run commands like
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$ ssh remoteuser@remotehost -p 22222 'tcpdump -U -i IFACE -w -' > FILE &
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$ wireshark FILE
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$ ssh remoteuser@remotehost '/sbin/dumpcap -i IFACE -P -w - -f "not port 22"' > FILE &
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$ wireshark FILE
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Supported interfaces:
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=over 4
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=item 1. ssh
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=back
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=head1 OPTIONS
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=over 4
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=item --help
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Print program arguments.
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=item --version
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Print program version.
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=item --extcap-interfaces
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List available interfaces.
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=item --extcap-interface=E<lt>interfaceE<gt>
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Use specified interfaces.
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=item --extcap-dlts
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List DLTs of specified interface.
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=item --extcap-config
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List configuration options of specified interface.
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=item --capture
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Start capturing from specified interface and write raw packet data to the location specified by --fifo.
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=item --fifo=E<lt>path to file or pipeE<gt>
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Save captured packet to file or send it through pipe.
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=item --remote-host=E<lt>remote hostE<gt>
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The address of the remote host for capture.
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=item --remote-port=E<lt>remote portE<gt>
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The SSH port of the remote host.
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=item --remote-username=E<lt>usernameE<gt>
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The username for ssh authentication.
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=item --remote-password=E<lt>passwordE<gt>
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The password to use (if not ssh-agent and pubkey are used). WARNING: the
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passwords are stored in plaintext and visible to all users on this system. It is
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recommended to use keyfiles with a SSH agent.
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=item --sshkey=E<lt>SSH private key pathE<gt>
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The path to a private key for authentication.
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=item --remote-interface=E<lt>remote interfaceE<gt>
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The remote network interface to capture from.
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=item --remote-capture-command=E<lt>capture commandE<gt>
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A custom remote capture command that produces the remote stream that is shown in Wireshark.
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The command must be able to produce a PCAP stream written to STDOUT. See below for more
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examples.
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=item --extcap-capture-filter=E<lt>capture filterE<gt>
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The capture filter
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=back
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=head1 EXAMPLES
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To see program arguments:
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sshdump --help
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To see program version:
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sshdump --version
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To see interfaces:
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sshdump --extcap-interfaces
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Only one interface (ssh) is supported.
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Output:
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interface {value=ssh}{display=SSH remote capture}
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To see interface DLTs:
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sshdump --extcap-interface=ssh --extcap-dlts
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Output:
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dlt {number=147}{name=ssh}{display=Remote capture dependent DLT}
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To see interface configuration options:
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sshdump --extcap-interface=ssh --extcap-config
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Output:
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arg {number=0}{call=--remote-host}{display=Remote SSH server address}{type=string}
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{tooltip=The remote SSH host. It can be both an IP address or a hostname}{required=true}
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arg {number=1}{call=--remote-port}{display=Remote SSH server port}{type=unsigned}
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{default=22}{tooltip=The remote SSH host port (1-65535)}{range=1,65535}
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arg {number=2}{call=--remote-username}{display=Remote SSH server username}{type=string}
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{default=myusername}{tooltip=The remote SSH username. If not provided, the current user will be used}
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arg {number=3}{call=--remote-password}{display=Remote SSH server password}{type=password}
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{tooltip=The SSH password, used when other methods (SSH agent or key files) are unavailable.}
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arg {number=4}{call=--sshkey}{display=Path to SSH private key}{type=fileselect}
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{tooltip=The path on the local filesystem of the private ssh key}
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arg {number=5}{call=--sshkey-passphrase}{display=SSH key passphrase}
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{type=string}{tooltip=Passphrase to unlock the SSH private key}
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arg {number=6}{call=--remote-interface}{display=Remote interface}{type=string}{default=eth0}
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{tooltip=The remote network interface used for capture}
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arg {number=7}{call=--remote-capture-command}{display=Remote capture command}{type=string}
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{tooltip=The remote command used to capture.}
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arg {number=8}{call=--remote-filter}{display=Remote capture filter}{type=string}
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{default=not ((host myip) and port 22)}{tooltip=The remote capture filter}
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arg {number=9}{call=--remote-count}{display=Packets to capture}{type=unsigned}{default=0}
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{tooltip=The number of remote packets to capture. (Default: unlimited)}
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To capture:
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sshdump --extcap-interface=ssh --fifo=/tmp/ssh.pcap --capture --remote-host 192.168.1.10
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--remote-username user --remote-filter "not port 22"
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To use different capture binaries:
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sshdump --extcap-interface=ssh --fifo=/tmp/ssh.pcap --capture --remote-host 192.168.1.10
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--remote-capture-command='dumpcap -i eth0 -P -w -'
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sshdump --extcap-interface=ssh --fifo=/tmp/ssh.pcap --capture --remote-host 192.168.1.10
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--remote-capture-command='sudo tcpdump -i eth0 -U -w -'
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NOTE: To stop capturing CTRL+C/kill/terminate application.
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=head1 SEE ALSO
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wireshark(1), tshark(1), dumpcap(1), extcap(4), tcpdump(1)
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=head1 NOTES
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B<Sshdump> is part of the B<Wireshark> distribution. The latest version
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of B<Wireshark> can be found at L<https://www.wireshark.org>.
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HTML versions of the Wireshark project man pages are available at:
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L<https://www.wireshark.org/docs/man-pages>.
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=head1 AUTHORS
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Original Author
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-------- ------
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Dario Lombardo <lomato[AT]gmail.com>
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