Bugtraq mailing list archives
Re: ICMP ECHO_REQUEST on BROADCAST--HOWTO Filter!
From: mfm () FRII COM (Mfm)
Date: Tue, 29 Jul 1997 09:39:52 -0600
And a final note: there are very few applications which depend on the routing of broadcast packets. You may know of one such application; if it's a popular one that you think lots of people are using, speak up. So you should feel safe in blocking broadcast traffic in your network. Popular applications which depend on *non*-routed broadcast traffic include RIP and netbios (Microsoft's networking protocol). Putting filter access-lists on your interfaces should not interfere with non-routed broadcast traffic.
I know of one such program. In order to print to HP JetDirect printers, you need either the JetAdmin program, or the drivers to go with it. Either way, when you print to a printer that is not on the local subnet, you are routeing broadcast packets. And yes, I found this out the hard way. Jake Frii.com Support Services
Current thread:
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- ICMP ECHO_REQUEST on BROADCAST--HOWTO Filter! Michael Douglass (Jul 21)
- Re: ICMP ECHO_REQUEST on BROADCAST--HOWTO Filter! Mfm (Jul 29)
- Re: ICMP ECHO_REQUEST on BROADCAST--HOWTO Filter! Corey Lindsly (Jul 29)
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- Re: ICMP ECHO_REQUEST on BROADCAST--HOWTO Filter! Mfm (Jul 29)