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Catégories:
Tips&Tricks
Firewall

ASA PAcket capture

Configure Packet Capture with the CLI Complete these steps in order to configure the packet capture feature on the ASA with the CLI: Configure the inside and outside interfaces as illustrated in the network diagram with the correct IP address and security levels. Start the packet capture process with the capture command in privileged EXEC mode. In this configuration example, the capture named capin is defined. Bind it to the inside interface, and specify with the match keyword that only the packets that match the traffic of interest are captured: Read More...

Tagged Cisco, ASA, Firewall

Catégories:
Tips&Tricks
Firewall

ASA: Using Packet Capture to troubleshoot ASA Firewall

What are Packet Captures - A Brief Introduction to Packet Captures Packet capture is a activity of capturing data packets crossing networking devices There are 2 types - Partial packet capture and Deep packet capture Partial packet capture just record headers without recording content of datagrams, used for basic troubleshooting upto L4 Deep packet capture will give us everything that a packet can tell, doing a deep packet analysis is like investigating in a forensic lab, it is used in advanced troubleshooting like troubleshooting at L7, troubleshooting for performance related issues, traffic patterns etc There are 2 ways of looking at traffic coming to any device, either collect captures on the ingress of the device or collect captures on the egress interface of the device behind the device in question. Read More...

Tagged Cisco, ASA, Firewall