There is usually a router placed here but it depends to some degree on
your ISP. You could use an Ethernet to T1 bridge to connect to the
CSU/DSU. Or if your using frame relay you could use a frad.
"Simplify - There is no value in complexity, it's too difficult to
manage."
Bill Stackpole, CISSP
Seitel Leeds & Associates Voice: 206.283.4355
2 Nickerson St. Suite 201 Email: bstackpole @
sla .
com
Seattle, Wa 98109
> -----Original Message-----
> From: Chris Pressley [SMTP:chrisp @
tidalwave .
net]
> Sent: Thursday, July 03, 1997 9:04 AM
> To: firewalls-digest @
GreatCircle .
COM
> Subject: router on external net
>
> Assume I setup a dual-homed firewall. My internal net connects to the
> internal interface on the firewall, and my external interface on the
> firewall connects to a T-1, then on to the ISP's router. The interface
> on
> my ISP's router is on the same network as my external interface. Two
> questions:
>
> 1. Do I need a router between my firewall external interface and my
> T-1 (I
> have to connect something to the CSU/DSU, right?).
>
> 2. Should I have a router between my firewall external interface and
> my
> T-1, give that my ISP's router is on the same network, for security
> reasons?
>
> Thanks,
> Chris
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