Diagnostics

The interface diagnostics page contains various tools to help debug network issues.

ARP Table

The ARP table module shows all MAC addresses known by this firewall.


IP IPv4 address
MAC MAC address
Manufacturer Manufacturer looked up with the mac address above
Interface Associated interface
Interface name The name of the interface if found
Hostname In case of a DHCPv4 client, the hostname when found in the leases file

DNS Lookup

Perform a quick dns lookup from the firewall.

NDP Table

Show addresses learned by the Neighbor Discovery Protocol for IPv6.


IPv6 IPv6 address
MAC MAC address
Manufacturer Manufacturer looked up with the mac address above
Interface Associated interface
Interface name The name of the interface if found

Packet capture

The packet capture module can be used to deep dive into traffic passing a (or multiple) network interfaces. It has some options you can choose from, such as the interface to listen on, protocol you interested in and host to track.

Packet capture uses tcpdump and runs in the background. After a capture is performed you can either look into it using the View capture button or download the pcap file to inspect it in an external tool, such as Wireshark.

Ping

Use ping to establish if a remote host can be reached using ICMP.

Port Probe

Test if a host has a certain TCP port open and accepts connections on it.

Trace Route

Use traceroute / traceroute6 to measure the path traffic would follow when trying to reach a specific host.