Bugtraq mailing list archives
Re: udp packet storms
From: avalon () coombs anu edu au (Darren Reed)
Date: Mon, 31 Oct 1994 22:12:31 +1100 (EDT)
To my knowledge, the broadcast trick will not work -- the "broadcast" will not go out on the ethernet or other broadcast address because the broadcast socket option will not have been selected and the packet will not be broadcast in reply. The echo loop between two hosts might, of course... PerryRun the following program. Try "[name] 255.255.255.255" and "[name] X.X.X.255" (assuming 8 bit subnetting). Notice both will work properly although I did not do a setsockopt with SO_BROADCAST. Tim N.
I've a feeling this maybe an OS dependency, for some programs I've compiled to send broadcast packets (such as RPC requests) returned an error on the send/sendto if a setsockop for SO_BROADCAST wasn't done. This was on OS/x 5.1 (Pyramid) and I assume it wouldn't have handed you a broadcast packet unless you asked. On SunOS 4.1.x I don't need to use setsockopt. Nor do I need to use it on Solaris 2.3. Oh HP-UX A.09.03 E, I get "sendto: permission denied" without using setsockopt to enable SO_BROADCAST. What about other OS's ? darren
Current thread:
- Re: udp packet storms, (continued)
- Re: udp packet storms Pat Myrto (Oct 29)
- Re: udp packet storms Darren Reed (Oct 30)
- Re: udp packet storms John Hawkinson (Oct 30)
- Re: udp packet storms Mark A. Fullmer (Oct 30)
- Re: udp packet storms Darren Reed (Oct 30)
- Re: udp packet storms Charles Howes (Oct 30)
- Re: udp packet storms Darren Reed (Oct 30)
- Re: udp packet storms Wietse Venema (Oct 30)
- Re: udp packet storms Jas (Oct 30)
- Re: udp packet storms Perry E. Metzger (Oct 30)
- Re: udp packet storms Tim Newsham (Oct 30)
- Re: udp packet storms Darren Reed (Oct 31)
- Re: udp packet storms Perry E. Metzger (Oct 31)
- Re: udp packet storms anthony baxter (Oct 31)
- Re: udp packet storms Paul 'Shag' Walmsley (Oct 31)
- Re: udp packet storms Darren Reed (Oct 31)
- CPF: 5th USENIX UNIX Security Symposium Frederick M Avolio (Oct 31)
- Re: udp packet storms Pat Myrto (Oct 29)
- Re: udp packet storms (more results) Paul 'Shag' Walmsley (Oct 31)