Plug (und cox) (fwd)

[John Olson]

The more I hear about cox, the more I'm glad to suffer with my sporadic
SprintBBD service (DSL not available).  For one thing, Cox blocks a
plethora of ports including 25 and 110 (The list on their site
somewhere, you really have to hunt for it).  
FWIW, Mesa has two cable systems, Cox and cableAmerica.  I have a friend
on CableAmerica's cable service and he's happy.  He's doing average user
stuff, but has a static IP, a cheap router behind his modem serving a
few Windows boxes, and does VPN to his employer with no problems.

-----Original Message-----
From: plug-discuss-admin@lists.plug.phoenix.az.us
[mailto:plug-discuss-admin@lists.plug.phoenix.az.us] On Behalf Of
Jeffrey Pyne
Sent: Monday, July 29, 2002 4:32 PM
To: 'plug-discuss@lists.plug.phoenix.az.us'
Subject: RE: Plug (und cox) (fwd)


As part of the Excite/@Home to Cox conversion, I had to convert from a
static IP address to DHCP.  When I originally changed the configuration
of my external NIC from static to DHCP (without changing anything else),
it just would not get a DHCP address.  I'd had the same machine with the
same NIC hooked up to the cable modem the whole time I'd been connected
to Cox. Sniffing on the external interface, I could see my DHCP requests
going out, but nothing coming back.  Again, I didn't change NICs-- I
just changed my ne0 configuration from static to DHCP.  After I fought
with getting that to work for a while, I began to wonder if their DHCP
server was somehow configured to only give out IP addresses to Windows
or Mac machines.  So I tried connecting a Windows machine (which had
never before been plugged into the cable modem) directly to my cable
modem.  The Windows machine immediately got a DHCP address.  I plugged
the OpenBSD box back in to the cable modem, and again I got no DHCP
address.  The only way I could get that OpenBSD box to get a DHCP
address was to power off the modem for a while. Weird.  I still don't
know why my Window machine was able to get a DHCP address without having
to recycle the cable modem, but not the OpenBSD
machine.   I haven't had any problems since I got it working.

~Jeff

On Monday, July 29, 2002 3:50 PM, tickticker wrote:

> In fact, it's a fact.  if you browse to 102.168.100.(11 or
> 1?) you can see
> that the modem holds your mac addies in memory.  when you 
> power it down for
> so many minutes, your current mac addies are dropped and when 
> you reboot,
> the new ones are put in memory.  if this is a new nic, you 
> must do this.  I
> use a cisco 2611 to spoof an intel nic mac address, then 
> nat/dhcp behind
> that so i can add and remove pc's at will and not be a slave 
> to powering
> down my modem when i swap machines (i can also have 65000 
> addresses in my
> class b 10.1.x.x scheme).  The reprovisioning that was earlier in this
> thread is usually due to the exite-cox cutover and should 
> only need to be
> done once if at all.
> 
> my 2 sense
> 
> anthony
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