[sllug-members]: Temporary Move

[u235sentinel]

Justin Searle wrote:
> Eric, Comcast's dynamic address are public IPs and don't change unless your 
> computer doesn't renew the address.  At my last place, I was able to keep the 
> same IP for almost 2 years.  They also don't (or at least didn't) block any 
> ports, so services should work fine.
> 
> On Friday 13 July 2007, Eric Huber wrote:
>> I'm hoping this has a pretty straight forward solution, but since I
>> haven't done it before, I'm looking for some direction and appreciate any
>> advice.
>>
>> Background: I currently run a home network with a FC3 server with two NICs
>> - one to my DSL modem (static IP with Xmission - IP Subnet: 4) and the
>> other to my internal network (10.0.0.1).  I am selling my home (closing
>> next week) and temporarily moving in with my parents until my new home has
>> finished construction.  They are on Comcast for everything (Phone, TV,
>> Internet) and my plan was to connect to their network while we are there.
>> They do NOT get a static IP from Comcast.
>>
>> How to make it happen: I would like to still have access to everything on
>> my internal network (access to internal interface - 10.0.0.1) while I'm
>> there - I run a DNS server and have various tools that I use on a daily
>> basis.  I don't need server services from the outside world (although it
>> would be nice), but would like to still access the internet through the
>> external interface (through my parents cable router).  What changes in
>> config are required to make this happen?
> 
> 
> 
It depends where you live.  Comcast has been known to block ports such 
as 80 or 25.  They had port 25 blocked in my area the last two years 
before they terminated my account for Unacceptable use (whatever the 
hell that means).

I ran a DNS server forwarding requests to their DNS server.  Whenever 
they changed DNS servers my DHCP'd nic would pick it up and simply 
forward DNS queries there.  They had switched DNS 3 times in the last 4 
years.  I also had DNAT/SNAT going on with iptables.  Very slick setup. 
  You can have multiple systems sharing a single IP address behind it. 
I strongly recommend making sure you have an account that would allow 
that.  I believe some residential accounts are not allowed to connect 
more than one computer to the Internet but again that would depend on 
what you bought.  I would ask first before doing it.

If you need a static IP address from Comcast I believe they will ask you 
to upgrade to a workplace lite business account.  It runs from $49 for 
the basic account to around $150 I think.  Been awhile since I signed up 
for it so check with Comcrap.. errr I mean Comcast before you do it.

FYI.. if you violate any of their TOS/AUP rules while doing this, the 
internet account could be terminated for 12 months.  It's up to their 
Abuse the customer (Abuse) department.  So be careful.