Customize logs syslog

[DSI_Infra]

Hello,

I have a pfsense 2.0 Release and a syslog server with loganalyser.
Logs pfsense are received by syslog in multiple frames
I have found this topic : http://redmine.pfsense.org/issues/1938, its worked.
Now I want to change format of ip address.
I want to replace the point after ip address by two points just before the port.
exemple : 192.168.0.1.80 change in 192.168.0.1:80
I have test with a sed but the command transform 192.168.0.1.80 in A^B^C^D^

thanks in advance for your help.