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Router 's firewall abilities
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| opsforce 2004-10-27, 2:29 am |
| Can anyone explain the principle of how a firewall works in a router or rather a router acts as a firewall?
Both SOHO routers like Linksys, Belkin as well as the big boys like Cisco.
Is it just basically the fact that your network segment is hidden behind the routers IP address?
Would like to know the details/principle behind it.
Thanks,
opsforce | |
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| smrkdown 2004-10-27, 11:37 pm |
| The quality of the software running on the router dictates the flexibility and function of the firewalling technology. Most cheap routers (linksys, netgear etc.) call NAT/PAT firewalling because incomming connections are only translated based on the ports you decide to allow. On more expensive routers, (cisco, juniper, etc) you have more flexibility. You can allow or deny traffic based on certain characteristics such as protocol, port, source and destination network addresses, other packet information, date/time, etc. This is actual firewalling. These routers also can do NAT/PAT which provides some limited security. | |
| smrkdown 2004-10-28, 8:46 am |
| Maybe you should check your definition of firewall. ACLs provide packet filtering firewalling functionality. I wonder where in my answer I said ACLs. And I wonder where in the question he said stateful firewalling. Do you fish? Have you ever tried salt water trolling?
Lets get rid of the "smarter-than-thou" attitude." | |
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| smrkdown 2004-10-28, 9:50 am |
| Yes. | |
| curiousgeorge 2004-10-28, 1:19 pm |
| You two have done wonders for someone asking about firewall basics.
Good job.
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| smrkdown 2004-10-28, 1:34 pm |
| It started out as a technical discussion didn't it? Why can't Waldo be as hard to find on here as he is in the books? | |
| opsforce 2004-10-29, 1:29 am |
| Can trolls be firewalled?
And if so does it use stateful packet inspection?
Gee louis, I just wanted to know how routers incorporate firewall technology.
Get ready here it comes......
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| kill-9 2004-10-31, 9:21 am |
| Not yet, But I'm still reading  |
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