FreeBSD, Intel Motherboards and Portmaster Serial Console - How?

Marc G. Fournier scrappy at
Fri Nov 19 13:03:37 PST 2004

I just picked up a PM25 for our colo facility, so that I can do remote 
admin on the FreeBSD boxes ... our two Tyan servers are a piece of cake, 
as they have DB9 Serial, like I'd expect ... but the Intel motherboards 
have "External RJ45 serial, internal serial header" on all of there 
boards, from what I can tell ... but what I can't figure out is how to 
make use of them ...

The servers are remote, so adding a 9pin serial port onto the 'internal 
header' is a bit difficult, so am wondering about using the 'external 
RJ45'.  The PM25 cables end in an RJ45 jack, and we had to purchase 
adapters to go from RJ45->9pin ... can those RJ45 adapters be used to plug 
into the RJ45 serial directly?

Also, from what I've been able to read so far, the RJ45 == Serial B, not 
Serial A ... so, I'd need to change how FreeBSD works as far as serial 
console is concerned, to look at Serial B, no?


Thanks ...

Marc G. Fournier           Hub.Org Networking Services (
Email: scrappy at           Yahoo!: yscrappy              ICQ: 7615664

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