Cisco Packet Tracer 7.3 added support for Ubuntu 18.04.3 (Bionic Weaver). Previous Ubuntu 16.04 (Xenial) version which is no longer supported.
New features in Packet Tracer 7.3
Dynamic ARP Inspection
Based on DHCP snooping, dynamic ARP inspection (DAI) is a security feature rejecting ARP packets in which advertised MAC address does not match any DHCP snooping entry for the switch port on which the ARP packet has been received. This behaviorpreventsman-in-the-middle attacks, where an unfriendly station intercepts traffic for other stations by poisoning the ARP caches of its unsuspecting neighbors.
DAI relies on DHCP snooping switch database. DHCP snooping listens to DHCP message between DHCP clients and DHCP servers. It builds a bindings database of valid tuples (MAC address, IP address, VLAN interface).
A sample Dynamic ARP Inspection lab is provided with Cisco Packet Tracer 7.3
Install Cisco Packet Tracer 7.3
Packet Tracer 7.3 setup on Ubuntu linux distribution
Download Cisco Packet Tracer 7.3 .deb package for Ubuntu 18.04.03 LTS from Netacad website.
As Packet Tracer is now distributed as a Debian .deb package, it can be installed using the dpkg command as any standard Ubuntu package.
sudo dpkg -i PacketTracer_730_amd64.deb
