not that i recommend this, as i do not believe it is needed ..
here is a post on how to do it
http://portforward.com/english/routers/port_forwarding/Linksys/WRT54G/Everquest.htmhere is the relevant kb article from sony on the specific ports
http://help.soe.com/app/answers/detail/a_id/1668/kw/ports/p/1Please note that EverQuest opens a random UDP data port from the player's PC every time EverQuest is run. Thus, the need to have all ports >1023 available.
In general, you can set up "Port Triggering" to allow our games to connect. To do so, you need to set up the start and port of the Trigger range to be 7000, and for the Triggered range, use the start port 1023 and the end port 65535. This is for both TCP and UDP packets. A good source of information on Port Triggering is
http://www.portforward.com but you may want to contact the router manufacturer or your ISP for more specific information.
also it may be a good idea to open port 5999
http://www.eqemulator.org/wiki/wikka.php?wakka=PlayGuidethis is an especially old router. they are know for slowly dying. it is HIGHLY recommended you get a new one to fix this problem.