Firewall - Extended Settings

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At the extended settings you can configure the following settings for the packet filter:

 

DNS refresh rate: If you use hostnames in the firewall rules this option defines the interval when the hostnames are resolved to IP addresses by asking the DNS servers. The firewall rules are refreshed by this action.
Maximum concurrent connections: Depends of the size of the RAM.
TCP liberal: Deactivates the strong TCP checks. TCP connections are not interrupted when the connection produces INVALID packets.
Activate ARP caching: Activates/deactivates the ARP cache (the table that assigns MAC addresses to IP addresses). It is necessary to deactivate the ARP cache in special situations. It is activated by default.
ARP cache size (entries): The maximum number of entries in the ARP cache.