The "protection" the router will offer the rest of your network is
extremely superficial, but it may be sufficient for your immediate needs.
Users on the new 192.x.x.x subnet will be able to make connections to
machines on your 172.x.x.x network, but the reverse will not be true if NAT
is enabled on the router.  They won't, however, be able to listen in on
traffic between 172.x.x.x machines, and probably won't even know your other
machines are on that range, so they're unlikely to *find* any machines to
connect to.
  In this configuration, traffic from the 192.x.x.x subnet is going to cross
some part of the 172.x.x.x network to get to your Internet gateway.
Hopefully, that's one of the things that next year's budget will fix.

David Gillett


On 3 Aug 2004 at 13:59, Ron Jobe wrote:

> I'm looking to provide Internet access (Surf Stations) for a large
> meeting.  Our normal network uses 172.x.x.x addresses with subnet
> masks of 255.255.255.0.  If I connect a wireless router (D-Link,
> Linksys, Netgear, etc) into the network and use its DHCP server to
> provide 192.x.x.x addresses, what risks are there to the existing
> network?  We're looking to use 3 or 4 wired workstations and MAYBE
> provide 802.11 wireless access.
>
> I'm looking just for Internet access on the 192 side.  I do NOT want
> the different addresses to be able to view each other.  I don't even
> need the 192 addresses to share files with each other.  I am looking
> to do this with existing equipment, or at least a cheaply as possible.
>  This will only be a temporary setup.  We have budgeted money for a
> separate internet connection for this type of station in next year's
> budget.
>
> Any comments or gotchas that I'm overlooking?
> Thanks!
> Ron Jobe
>
>                          PCBUILD's List Owners:
>                       Bob Wright<[log in to unmask]>
>                        Drew Dunn<[log in to unmask]>

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