Requirement of a Firewall behind a CISCO router

Hi,

I have a cisco 2620 router from my ISP(Sonic.net) providing a T1
connection for a small web server and some computers in my home
office. I was looking to install a firewall device behind this router,
something that is easy to manage using an admin interface. So I got
this Linksys broadband router (http://www.cdw.com/shop/products/
specs.aspx?EDC=447401) but this router is not working with the CISCO
router. However, I can this router working with a modem.

Any help? I was hoping to invest $200 and get a firewall device than
mess around with IP tables, IPchains etc.

Thanks in advance

Rakesh

Re: Requirement of a Firewall behind a CISCO router

On May 18, 12:10 pm, Rakesh wrote:
> Hi,
>
> I have a cisco 2620 router from my ISP(Sonic.net) providing a T1
> connection for a small web server and some computers in my home
> office. I was looking to install a firewall device behind this router,
> something that is easy to manage using an admin interface. So I got
> this Linksys broadband router (http://www.cdw.com/shop/products/
> specs.aspx?EDC=447401) but this router is not working with the CISCO
> router. However, I can this router working with a modem.
>
> Any help? I was hoping to invest $200 and get a firewall device than
> mess around with IP tables, IPchains etc.
>
> Thanks in advance
>
> Rakesh

if you want to use iptables then you buy a second hand pc and install
linux and iptables on it and install 2 NIC cards in it.

There is no reason however, why the linksys router won't work behind
the cisco router.

Flamer.

Re: Requirement of a Firewall behind a CISCO router

On Thu, 2007-05-17 at 17:10 -0700, Rakesh wrote:
> I have a cisco 2620 router from my ISP(Sonic.net) providing a T1
> connection for a small web server and some computers in my home
> office. I was looking to install a firewall device behind this router,
> something that is easy to manage using an admin interface. So I got
> this Linksys broadband router (http://www.cdw.com/shop/products/
> specs.aspx?EDC=447401) but this router is not working with the CISCO
> router. However, I can this router working with a modem.
>
> Any help? I was hoping to invest $200 and get a firewall device than
> mess around with IP tables, IPchains etc.

You can write a firewall with acls.

ip access-list extended f0-in
permit ip any any reflect f0-in-dyn
ip access-list extended f0-out
evaluate f0-in-dyn
permit icmp any any
permit ip any any fragments

interface FastEthernet0
ip access-group f0-in in
ip access-group f0-out out

Re: Requirement of a Firewall behind a CISCO router

On May 17, 8:10 pm, Rakesh wrote:
> Hi,
>
> I have a cisco 2620 router from my ISP(Sonic.net) providing a T1
> connection for a small web server and some computers in my home
> office. I was looking to install a firewall device behind this router,
> something that is easy to manage using an admin interface. So I got
> this Linksys broadband router (http://www.cdw.com/shop/products/
> specs.aspx?EDC=447401) but this router is not working with the CISCO
> router. However, I can this router working with a modem.
>
> Any help? I was hoping to invest $200 and get a firewall device than
> mess around with IP tables, IPchains etc.
>
> Thanks in advance
>
> Rakesh

1. Return the Linksys, it's not enough router for you... you'll need
the $200 for a second hand pc..
2. SonicWall TZ150 or TZ170
3. Pickup a book and read about ipchains and iptables...
4. research iptables and ipchains using your second hand pc....

RedForeman