| Checkpoint – Proxy ARP for manual NAT on VSX |
In my post Checkpoint – Automatic NAT vs Manual NAT I explained both types of NAT clarifying that the Manual NAT makes neccesary the Proxy ARP entry configuration. This example is for a Checkpoint VSX cluster scenario.
This is an example that was used:
The IP that should be configured to answer to ARP request is the 80.80.100.100 (No server … Read more
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| Checkpoint – Nagios plugin to monitor ARP table in VSX |
When suffering random network interruptions, a possible cause (and diffcult to find) is our firewall ARP table overflow. In Checkpoint systems, the Linux kernel Gaia is based on would log messages like "kernel: neighbour table overflow" to /var/log/messages.
After living two small crisis due to this problem (network scanning software and mask B networks are dangerous for the … Read more
