NAME

       sniffglue - secure multithreaded packet sniffer

SYNOPSIS

       sniffglue [-vrpVh] [-n <threads>] device

DESCRIPTION

       sniffglue is a network sniffer written in rust. Network packets are parsed concurrently
       using a thread pool to utilize all cpu cores. Project goals are that you can run sniffglue
       securely on untrusted networks and that it must not crash when processing packets. The
       output should be as useful as possible by default.

OPTIONS

       -v, --verbose
           Increase filter sensitivity to show more (possibly less useful) packets. The default
           only shows few packets, this flag can be specified multiple times. (maximum: 4)

       -h, --help
           Prints help information.

       -p, --promisc
           Set device to promiscuous mode.

       -r, --read
           Open device as pcap file.

       -n, --threads threads
           Specify the number of threads.

       -V, --version
           Prints version information. If -r was specified, open as pcap file instead.

EXAMPLES

       Sniff with default filters (dhcp, dns, tls, http) from enp0s25:

           sniffglue enp0s25

       Increase the filter sensitivity (arp):

           sniffglue -v enp0s25

       Increase the filter sensitivity (cjdns, ssdp, dropbox, packets with valid utf8)

           sniffglue -vv enp0s25

       Almost everything

           sniffglue -vvv enp0s25

       Everything

           sniffglue -vvvv enp0s25

       Read a dump from sniff.pcap, with increased filter sensitivity and decode packets with 1
       thread:

           sniffglue -vvrn1 sniff.pcap

PROTOCOLS

       ethernet, ipv4, ipv6, arp, tcp, udp, http, tls, dns, dhcp, cjdns eth beacons, ssdp,
       dropbox beacons

SECURITY

       To report a security issue please contact kpcyrd on ircs://irc.hackint.org.

   SECCOMP
       To ensure a compromised process doesn't compromise the system, sniffglue uses seccomp to
       restrict the syscalls that can be used after the process started. This is done in two
       stages, first at the very beginning (directly after env_logger initialized) and once after
       the sniffer has been setup, but before packets are read from the network.

   HARDENING
       During the second stage, there's also some general hardening that is applied before all
       unneeded syscalls are finally disabled. Those are system specific, so a configuration file
       is read from /etc/sniffglue.conf. This config file specifies an empty directory for chroot
       and an unprivileged account in user that is used to drop root privileges.

   FUZZING
       The packet processing of sniffglue can be fuzzed using cargo-fuzz. Everything you should
       need is provided in the fuzz/ directory that is distributed along with its source code.
       Please note that this program links to libpcap which is not included in the current
       fuzzing configuration.

SEE ALSO

       pcap(3PCAP), seccomp(2)

AUTHORS

       This program was originally written and is currently maintained by kpcyrd. Bug reports and
       patches are welcome on github:

           https://github.com/kpcyrd/sniffglue

                                            2024-09-10                               sniffglue(1)