Category: Firewall

Check Point Quick Reference – Tcpdump

NOTE: fw monitor operates above layer 2 and does not include mac address information – cant see ARP messages. tcpdump can see layer 2 ARP messages This is one of the most common tcpdump commands: (looks for packets from a src to dst, need to specify interface) tcpdump nn-i eth2 host 11.11.11.11 and host 22.22.22.22…

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Check Point Quick Reference – FW Monitor

Overview: FW Monitor is a built-in firewall tool which needs no separate install on the device you wish to capture packets and interrogate connections. It is a functionality provided with the installation of the FW-1 package and syntax is also identical across all FW-1 installations. FW Monitor allows for sampling the connection from 4 different…

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Firewall Commands For Identifying Specific Routes

The Question: Identify the route to specific destination/target without using the routing table (more specific) I was asked the question today, and blanked out… I have ran the Cisco and CheckPoint IPSO versions, but not Splat, but still couldnt pull it from memory. Once I looked it up, I felt silly, but know it will…

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Check Point Firewall – Nokia IPSO CST Hanging or Taking Forever?

Is your Nokia IPSO CST Not finishing? Trying to run a CST on your Nokia, but seems to be taking forever? I have had the same issue on various Nokia security appliances running on IPSO 4.2 and older. The problem ended up being hung process that was spawned by the CST program. It seems that…

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Check Point Firewall – Detect SSH over Non Standard Ports

Many enterprises deploy proxies these days, but many are not aware that if they are not configured correctly, they may be allowing tunneling through certain protocols, and in essence, giving a tech savvy employee the keys to exploit this fault. Most times this is SSH over HTTP/HTTPS, but can also be over other ports, which…

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Check Point Firewall – Interfaces Reordered Upon Upgrade

A few days ago, one of our Check Point IAS M6 Firefly equiped, R70.20 Splat clusters, had a member fail due to “PLANAR VOLTAGE FAILURE”, so says the IBM iLO event log. Since this is not solved by a simple power supply replacement, so an RMA replacement unit from Check Point was obtained. The new…

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Check Point Firewall – Backup vs Snapshot

Backup procedures Check Point provides three different procedures for backing up (and restoring) the operating system and networking parameters on your appliances. • Snapshot (Revert) • Backup (Restore) • upgrade_export Each of these procedures backs up certain parameters and has relative advantages (such as: file size, speed, and portability), which are fully described in this…

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