AZTCOFW / DOCUMENTATION
Preventing RFC1918 Traffic from Exiting a WAN Interface
Configuration guides, troubleshooting and practical advice for AZTCOFW.
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Adding this rule to the AZTCO-FW firewall will block access to bridge devices like cable modems or upstream routers outside of the WAN interface. For example, many cable modems use an IP address of 192.168.100.1. This ma
Scenarios where RFC1918 addresses should NOT be blocked on the WAN interface
In its default configuration, AZTCO-FW software is not configured to block RFC1918 addresses from being routed from the LAN subnet to the outside WAN, because there are two common scenarios where blocking this traffic is
Steps to block RFC1918 traffic from leaving the WAN interface
For installations where the above scenarios do not apply, an additional firewall rule can be put in place to prevent RFC1918 traffic from leaking out of the WAN interface. This provides a small increase in security and p