Is a router needed?
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Posted by Cisco Newbie on December 18, 2005, 7:50 pm
Please log in for more thread options If I have a PIX firewall with the outside interface connected directly to a cable modem (i.e. ip address dhcp setroute) and the inside interface connected to a switch/hub. Would that configuration work? Or would I need a router between the pix and cable modem: i.e. Internet ----> Cable Modem ----> Pix 515 ----> Switch/Hub (is this a
valid configuration)
or would I need Internet -----> Cable Modem ----> Router ------> PIX 515 -----> Switch/Hub
As an aside: when configuring a route the Gateway IP is required, for the top configuration (if valid) would I put the IP address of the PIX as th Gateway IP (with the IP of the cable modem being dynamic)? In the second scenario I guess I would put the IP address of the Router. Thanks Cisco Newbie | |||||||||||||||||||
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Posted by CiscoHeadsetAdapter.com on December 18, 2005, 10:12 pm
Please log in for more thread options regular broadband routers do. Actually the PIX 501 will provide better security protection a plain router does (with appropriate configuration). But from another hand it has some limitations - for example, if you want to have wireless setup in your house, you will need another wireless router or access point. Also PIX firewalls are more complicated from the configuration standpoint. If you already have it, and if you want to spend some time to learn it - it's good choice. If you are just planing to get it - do some more research, what you can get for the same money... Good luck, Mike www.ciscoheadsetadapter.com > Simple question - do I need a router for a home network?
> > If I have a PIX firewall with the outside interface connected directly to > a cable modem (i.e. ip address dhcp setroute) and the inside interface > connected to a switch/hub. Would that configuration work? Or would I need > a router between the pix and cable modem: i.e. > > Internet ----> Cable Modem ----> Pix 515 ----> Switch/Hub (is this a > valid configuration) > > or would I need > > Internet -----> Cable Modem ----> Router ------> PIX 515 -----> > Switch/Hub > > As an aside: when configuring a route the Gateway IP is required, for the > top configuration (if valid) would I put the IP address of the PIX as th > Gateway IP (with the IP of the cable modem being dynamic)? In the second > scenario I guess I would put the IP address of the Router. > > Thanks > > Cisco Newbie > > > | |||||||||||||||||||
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Posted by Christoph Gartmann on December 19, 2005, 3:36 am
Please log in for more thread options >Simple question - do I need a router for a home network?
> >If I have a PIX firewall with the outside interface connected directly to a >cable modem (i.e. ip address dhcp setroute) and the inside interface >connected to a switch/hub. Would that configuration work? Or would I need a >router between the pix and cable modem: i.e. > >Internet ----> Cable Modem ----> Pix 515 ----> Switch/Hub (is this a >valid configuration) > >or would I need > >Internet -----> Cable Modem ----> Router ------> PIX 515 -----> Switch/Hub No need for a router in your scenario. >As an aside: when configuring a route the Gateway IP is required, for the
>top configuration (if valid) would I put the IP address of the PIX as th >Gateway IP (with the IP of the cable modem being dynamic)? Yes, the default gateway for the computers connected to the switch is the ip addresse of the Pix inside interface. >In the second scenario I guess I would put the IP address of the Router.
No, the default gateway must have an ip address of the same network as the computers. So again it is the ip address of the Pix inside interface. Regards, Christoph Gartmann -- Max-Planck-Institut fuer Phone : +49-761-5108-464 Fax: -452 Immunbiologie Postfach 1169 Internet: gartmann@immunbio dot mpg dot de D-79011 Freiburg, Germany http://www.immunbio.mpg.de/home/menue.html | |||||||||||||||||||
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