Accessing DOCSIS diagnostics from within/behind FreeBSD router

[Steve Bertrand]

> I have a Motorola SB5100 cable modem directly attached to a FreeBSD router 
> (running ipfilters/ipnat). The external network is a comcast segment, and is 
> assigned a dynamic IP. The internal network is routed on 192.168.1.x, where 
> the router is 192.168.1.254.
> 
> The trick is, the cable modem is on the "external" side, but apparently 
> listening on 192.168.1.100 for HTTP requests (for its diagnostics report).
> 
> Is there anyway to access this diagnostic page without temporarily plugging 
> the CM into a Windows box?
> 

Since 192.168.1.x subnet is on the inside of the network, your FBSD box
will never route a request for an IP on that network outbound by
default.

I may be shown up here, but you will probably be best changing your
internal network to another subnet 192.168.0.x perhaps, and then your
FBSD router should pass toward the Internet a request for 192.168.1.100,
and hopefully the comcast modem will catch it.

Steve


> Thanks,
> Seth Henry
> 
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-- 

Steve Bertrand
President/CTO,
Northumberland Network Services

t: 905.352.2688
w: www.northnetworks.ca