I would like to have the ability to enable resolving of IP addresses and service ports in the log.

Example:

Normal Log:
jun/16 22:41:26 firewall,info DROP input: in:ether8 out:(none), src-mac 00:90:1a:a2:1a:50, proto TCP (SYN), 77.119.230.173:55859->108.38.255.18:23, len 60

Preferred while debugging:
jun/16 22:41:26 firewall,info DROP input: in:ether8 out:(none), src-mac 00:90:1a:a2:1a:50, proto TCP (SYN), 77.119.230.173 (77.119.230.173.static.drei.at):55859->108.38.255.18 (upland.cfwmg.com):23(telnet), len 60

nope

unless you send your logs to a syslog server like logzilla, if you have money, or something like loganalyzer.

cheers

there you go : http://loganalyzer.adiscon.com/doc/install.html

This was a feature request, not a "can I do this.."