This program allows you to dump the traffic on a network. tcpdump is able to
examine IPv4, ICMPv4, IPv6, ICMPv6, UDP, TCP, SNMP, AFS BGP, RIP, PIM, DVMRP,
IGMP, SMB, OSPF, NFS and many other packet types.
It can be used to print out the headers of packets on a network interface,
filter packets that match a certain expression. You can use this tool to track
down network problems, to detect attacks or to monitor network activities.
This snap is not maintained by https://www.tcpdump.org/ and instead packages
the deb of tcpdump from the Ubuntu archive as a snap. Please see the developer
website (below) for details.
$ sudo tcpdump
tcpdump will drop privileges to the snap_daemon user and group by default. To write out captures, the /var/snap/tcpdump/common/captures directory is created with snap_daemon ownership. Eg:
Swap out openSUSE_Leap_15.5 for openSUSE_Leap_15.4 or openSUSE_Tumbleweed if you’re using a different version of openSUSE.
With the repository added, import its GPG key:
sudo zypper --gpg-auto-import-keys refresh
Finally, upgrade the package cache to include the new snappy repository:
sudo zypper dup --from snappy
Snap can now be installed with the following:
sudo zypper install snapd
You then need to either reboot, logout/login or source /etc/profile to have /snap/bin added to PATH.
Additionally, enable and start both the snapd and the snapd.apparmor services with the following commands: