PARAMETERS
-f, --fwmark-service integer
Use a firewall-mark, an integer value greater than zero, to denote a virtual service instead of an address, port and protocol (UDP or TCP). The marking of packets with a firewall-mark is configured using the -m|--mark option to iptables(8). It can be used to build a virtual service assoicated with the same real servers, covering multiple IP address, port and protocol tripplets.
Using firewall-mark virtual services provides a convenient method of grouping together different IP addresses, ports and protocols into a single virtual service. This is useful for both simplifying configuration if a large number of virtual services are required and grouping persistence across what would otherwise be multiple virtual services.
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