Browsing All posts tagged under »troubleshooting«

Land Attack or configuration failure?

July 8, 2022

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As you know the Local Area Network Denial (LAND) attack is a type of Denial of Service (DOS) attack in which the attacker attacks the network by sending the same source and destination IPs and ports (like TCP SYN where the source IP and destination IP is from the destination device itself). if you check […]

Palo Alto troubleshooting commands Part 2.

January 14, 2015

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This is the part 2 of the troubleshooting commands that can help you better understand what and how you can troubleshoot on Palo Alto Next Generation Firewall in cli.The Part 1. can be found here. 1. Capture and logging specific traffic2. Logging traffic for global counters3. Updates3.1 Applications and Threats update3.2 Software Upgrades3.3 Licensing 1. […]

Palo Alto troubleshooting commands

December 10, 2013

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Its now a beautiful saturday afternoon outside and I sit here in this boring room and made this post about useful palo alto commands, that can help us in case of a problem arises. There is no wind, I wanted today go to windsurf… With my requirements for any networking layer 3 security device I […]

Cisco ASA troubleshooting commands

September 18, 2013

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With my requirements for any networking layer 3 security device I collected the basic commands that you have to know or you will not be able to manage your device. 1.0 Check the basic settings and firewall states Check the system status Check the hardware performance Check the High Availability state Check the session table […]

Again fw monitor, hopefully the last post

August 7, 2012

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I have always looked for a good documentation about fw monitor and I have find 2 usable doc. One is the official pdf and one in a post from a Checkpoint Expert (you can find them on my posts somewhere..) Actually there is no need to look for a documentation on google as it is […]

Edge troubleshooting note

April 17, 2012

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Its April, but I have just realised the new features of Checkpoint Edge Firewall, in my point of view it is the worst firewall I have ever seen regarding the granurality in management or in troubleshooting, but it works fine as its expected and its small and nice and can be integrated under the same […]