16 articles Networking

Cisco inverse subnet masks

Leeched from http://www.cyberflunk.com/~nikm/cisco/masks.html (without permission) Cisco Netmasks, CIDR sizes, and Inverse Masks The address/netmask syntax of 172.16.35.0/255.255.255.0 should be familiar to anyone with some experience with IP routing, and is fairly easy to figure out address ranges given a calculator and a piece of scrap paper. There are other forms of addressing which are used…

How do i create manual ARP (for inbound NAT) entries in Checkpoint?

Updated 11th July 2017 Manual ARP in Firewall 1 NG If you must use manual NAT rules on win 2000 (and later!), do the following: 1. Create c:\windows\fw1\R62\fw1\conf\local.arp file as per the format below. 2. Uncheck “Automatic Arp Configuration” in Global Properties 3. Check the setting under the Manual Nat settings in Global Properties. 4.…

How to redirect log files to another drive (Checkpoint) (Firewall NG)

I’m running VPN-1 UTM and this tricked worked fine. Looking at the registry, there are several keys under HKEY_LOCAL_MACHINE\SOFTWARE\CheckPoint\FW1\ which look to pertain to whichever version you have installed. Under the top level key HKEY_LOCAL_MACHINE\SOFTWARE\CheckPoint\FW1\ is a “CurrentVersion” String. Mine is “6.0” so I navigated to HKEY_LOCAL_MACHINE\SOFTWARE\CheckPoint\FW1\6.0 and created the “FWLOGDIR” string there, restarted the…