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Extra resources for Check Point NG VPN-1/Firewall-1: Advanced Configuration and Troubleshooting

Example text

The packet is then passed up the stack to the network layer to determine routing. Because the DIP has already been modified, the packet is then forwarded out the internal interface; no host route is necessary. 4. 1. qxd 4/2/03 2:39 PM Page 11 FW-1 NG Operational Changes • Chapter 1 packet; a valid response to a connection request, and routes it to the default route. 3. This option allows two NAT rules to apply to a connection. It is useful when you need to translate both the source and destinations.

Many enhancements are included for each FP release of the NG code. It is important to realize that the design modifications are engineered to improve the security of your VPN-1/FireWall-1 architecture. In doing so, the means by which the inspect engine makes decisions regarding packet flow have changed. 1) version or within NG feature packs; a firewall administrator needs to understand the potential impact to his or her environment. Your job is to implement these options successfully into your environment.

In addition to disabling this port, you must make sure Routing and Remote Access is disabled. In addition to the aforementioned configuration issues, you should be aware of other restrictions: ■ Automatic ARP is not supported in performing Manual NAT. ■ Automatic ARP is not supported on Linux implementations or when SecurePlatform is used (Check Point Knowledge Base Solution sk8022). ■ Automatic ARP is not supported when IP Pool NAT is used (Check Point Knowledge Base Solution sk5751). qxd 4/2/03 2:39 PM Page 13 FW-1 NG Operational Changes • Chapter 1 When ARP Is Automatic Provided the operating system is both properly configured and supports Automatic ARP, this feature is available for use.

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