Dns Lookup; Packet Capture - Cisco ISA550 Administration Manual

Device Management
Device Discovery Protocols
STEP 1
STEP 2
STEP 3
STEP 4
STEP 1
STEP 2
STEP 3
Device Discovery Protocols
Cisco ISA500 Series Integrated Security Appliances Administration Guide

DNS Lookup

Use the DNS Lookup page to retrieve the IP address of any server on the Internet.
Click Device Management > Diagnostic Utilities > DNS Lookup.
Enter the IP address or domain name that you want to look up in the IP Address or
Domain Name field.
Click Run to query the server on the Internet. If the host or domain name exists,
you will see a response with the IP address.
Click Clear to clean up the querying results.

Packet Capture

Use the Packet Capture page to capture all packets that pass through a selected
interface.
Click Device Management > Diagnostic Utilities > Packet Capture.
Choose an interface or a network (such as DEFAULT VLAN) that you want to
capture the packets from the Network drop-down list.
NOTE: Selecting WAN1 or WAN2 (if applicable) means capturing the packets
through a logical interface. Selecting GEx means capturing the packets through a
physical interface. If you choose a VLAN, only inter-VLAN traffic will be captured.
Click Start to start capturing the packets, click Stop to stop capturing, or click
Save to save the captured packets.
The security appliance supports the following protocols to discover the devices:
• UPnP Discovery, page 381
• Bonjour Discovery, page 382
• CDP Discovery, page 382
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