The best sites that I've seen regarding firewall types and their
characteristics are
www.securegovernment.com and www.fishnetsecurity.com
These sites give details about each type (packet-filtering, stateful
inspection, circuit-level
proxy, and application-level proxy) and pros and cons of each as well.
Thanks!
Chris
Chris Hastings, CCSA, CCSE
Brainbench MVP for Internet Security
http://www.brainbench.com
Ron DuFresne
<dufresne@winternet. To: Bill Royds <[EMAIL PROTECTED]>
com> cc: Yap Kung Leng
<[EMAIL PROTECTED]>, [EMAIL PROTECTED]
Sent by: Subject: RE: Packet Filtering &
Proxy Server
firewalls-owner@List
s.GNAC.NET
04/18/2001 01:56 AM
I see this answer alot, yet, have watched awhile, and asked a few times,
how deeply? How far into the packet do the various proxies delve? Is
that not the way to determine how they rank against one another? How
effective they are in securing a protocol would be addressed with some
clarification in this area, no? How much information is there giving
these kinds of details? Is there a site out here with a detailed markup
of various proxies that folks can compare the depth of the processing a
proxy goes to determine compliance with a sites policy?
Thanks,
Ron DuFresne
On Tue, 17 Apr 2001, Bill Royds wrote:
> A packet filter looks only at the IP and TCP/UDP headers (it may assemble
the stream for TCP) but not at the contents of the packet.
> An Application Proxy firewall looks at the full contents of packets
and checks for conformance to the application (HTTP, Pop3 FTP) service
RFCs.
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Yap Kung Leng
> Sent: Tuesday, April 17, 2001 22:57
> To: [EMAIL PROTECTED]
> Subject: Packet Filtering & Proxy Server
>
>
> Hi all,
>
> I am a newbie. Can anyone tell me what are the different between Packet
> Filter & Proxy Server?
>
> Thank you all
>
> Regards,
> KL Yap
>
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