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port forwarding with Cisco 675 in bridging mode?

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DoubleU

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Dec 5, 2000, 3:00:00 AM12/5/00
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Is there anything special I need to do to a Cisco 675 in 'bridging mode' to
forward a port? I wouldn't think there would need to be, but after changing
DSL service and needing to switch from routing mode to bridging mode, my
ports aren't getting forwarded.

phil

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Dec 6, 2000, 3:00:00 AM12/6/00
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Dear doubleu,

Port forwarding only works if you have the nat enabled on your 675. in
bridging mode, your 675 acts like a hub instead of like a router. you will
need to have a machine that is capable of running this type of a
service.(i.e. linux box)

Phil
"DoubleU" <double...@alltel.net> wrote in message
news:YC9X5.38730$II2.3...@newsread2.prod.itd.earthlink.net...

Duncan

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Dec 7, 2000, 3:00:00 AM12/7/00
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"phil" <ph...@philngood.com> wrote in message news:90lvhn$5tj$1...@scream.jriver.com...

Essentially correct. In bridging mode each computer gets its own IP, the 675 gets none, and there are no ports to forward, because each computer already has its own REAL IP directly, thus its own ports.

In general, this is MUCH simpler, as everything should "just work" (if you have it set up right after the switch to bridging, anyway), however, that isn't all good, because the efforts of hackers "just work" too, if you aren't careful about security (IOW, if you have file and print sharing turned on and operating over TCP/IP, as the main problem). Thus, you may wish to look into getting something like the NetGear RT311/314, to setup as a router/firewall between you and the net. In standard mode, it provides the NAT/port filtering/port forwarding you are used to, and therefore increases your security back to where it was in PPP mode. At a minimum I would run a software firewall, but here, I haven't had any hits on the software firewall since I installed the 314 and configured it, and I was getting hit all the time before, so the hardware version DOES add another layer of security, and cuts down on junk alerts.

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