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How can I monitor the incoming live traffic on certain ports, hosts or IP addresses on my Barracuda Networks product?

Solution #00004303

Scope:

This solution applies to all Barracuda Networks products.

Answer:

You can use custom arguments with the Tcpdump tool on your Barracuda Networks product to gather and filter various network traffic data. Navigate to Advanced > Troubleshooting. Press Begin TCPDump to execute a tcpdump command. This will open a new window displaying the current traffic flowing through the device.

To see traffic on a specific port you can use this argument:

-lnxX -s 1524 port <port #>

Example:

-lnxX -s 1524 port 25

If you know the hostname or IP address you want to filter for, you can add the arguments seen in the examples below.

Example:

-lnxX -s 1524 port 25 and host 166.217.100.113

or

-lnxX -s 1524 port 25 and host mail.example.com

Link to this page:

http://www.barracudanetworks.com/kb?id=50160000000Hpmk