firehol-client(5) client command


{ client | client46 } service action [rule-params]

client4 service action [rule-params]

client6 service action [rule-params]


The client subcommand defines a client of a service on an interface or router. Any rule-params given to a parent interface or router are inherited by the client, but are reversed.

For FireHOL a client is the source of a request. Even though this is more complex for some multi-socket services, to FireHOL a client always initiates the connection.

The service parameter is one of the supported service names from firehol-services(5). Multiple services may be specified, space delimited in quotes.

The action can be any of the actions listed in firehol-actions(5).

The rule-params define a set of rule parameters to further restrict the traffic that is matched to this service. See firehol-params(5) for more details.


Writing client4 is equivalent to writing ipv4 client and ensures this subcommand is applied only in the IPv4 firewall rules.

Writing client6 is equivalent to writing ipv6 client and ensures this subcommand is applied only in the IPv6 firewall rules.

Writing client46 is equivalent to writing both client and ensures this subcommand is applied in both the IPv4 and IPv6 firewall rules; it cannot be used as part an interface or router that is IPv4 or IPv6 only.

The default client inherits its behaviour from the enclosing interface or router.


client smtp accept
client "smtp pop3" accept
client smtp accept src
client smtp accept log "mail packet" src


FireHOL Team.