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uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed.

DSL-504 Router question

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Old June 17th 05, 08:35 AM posted to uk.telecom.broadband
Alt Beer
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Posts: 15
Default DSL-504 Router question

I have a DSL-504 router (generation I with firmware R2.02.b2t4uk)

Does anyone know if it is possible and if so how to block incoming ICMP echo
requests ?

If not possible with current firmware would it be possible with an upgrade
firmware R2.21.002.05.b15


Old June 17th 05, 11:15 AM posted to uk.telecom.broadband
Jim Howes
external usenet poster
Posts: 104
Default DSL-504 Router question

Alt Beer wrote:
Does anyone know if it is possible and if so how to block incoming ICMP echo
requests ?

Not entirely sure about that particular firmware version.

But why do you want to block ICMP echo?

Norton firewall users in particular seem to think that blocking ICMP on
dynamic IP addresses on dialup connections somehow increases their level
of security.

However, such things are frowned upon by the networking community. One
organisation I am aware of blocks "ping" (by which they mean the broken
UDP ping implementation used by certain redmondware boxen) "to prevent
hacking of unsecured windows PC's using that port"

So, they have a bunch of unsecured, unpatched, windows machines, which
are probably already owned and infected by half a dozen if not more
viruses, worms, and trojans, and instead of actually fixing the problem,
they block ping.


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