You may also use Frame Relay Switching to terminate one or both
PVC on another router. See the following URL for more information
on Frame Relay Switching on Cisco routers:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/112cg_cr/4cbook/4cfrelay.htm#xtocid62034
Cheers, Oliver
On Thu, Sep 16, 1999 at 03:20:11PM -0700, Roy Mendoza wrote:
> >From a security standpoint, is it acceptable to expose a router interface to
> the Internet where the Internet and private network are on the same physical
> circuit?
>
> Quick background: Our carrier cannot provide a channelized frame relay
> circuit, so we must bring their single circuit containing our private
> network and Internet feed to our Cisco 3640, and then inside the 3640
> separate these two PVCs. One PVC (our private network) would go out the
> 3640's Ethernet interface to a LAN (inside) hub, while the other PVC
> (Internet) would go out another 3640 Ethernet interface to a PIX firewall.
>
> While it's technically possible to do the above, I'm a bit concerned about
> exposing any interfaces on the 3640 (core) router to the Internet and
> thereby increasing the risk of someone attacking this core router.
>
> Any experienced thoughts???
>
> Thanks!!!
>
> Roy.
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