nanog mailing list archives
Re: Cable Modem [really responsible engineering]
From: woods () weird com (Greg A. Woods)
Date: Tue, 26 Jun 2001 14:41:32 -0400 (EDT)
[ On Tuesday, June 26, 2001 at 10:43:03 (-0400), Fletcher E Kittredge wrote: ]
Subject: Re: Cable Modem [really responsible engineering] Let me stress in passing, it is very important that public (non-RFC 1918) IPv4 addresses not be wasted on cable/wireless/dsl modems. There is no reason for these modems to be reachable from the outside world (in an IPoE environment) and reachability is actually dangerous. If you waste public IP addresses on these devices, eventually ARIN will step on your head.
Indeed. In fact most of the cable and DSL modems I've seen seem to be so poorly implemented that giving the world access to them is far worse than just shooting yourself in the foot. Some even unconditionally allow SNMP sets from the customer premises interface, which is bad enough. -- Greg A. Woods +1 416 218-0098 VE3TCP <gwoods () acm org> <woods () robohack ca> Planix, Inc. <woods () planix com>; Secrets of the Weird <woods () weird com>
Current thread:
- Re: Cable Modem [really responsible engineering] Fletcher E Kittredge (Jun 25)
- <Possible follow-ups>
- Re: Cable Modem [really responsible engineering] Fletcher E Kittredge (Jun 25)
- Re: Cable Modem [really responsible engineering] Fletcher E Kittredge (Jun 26)
- Re: Cable Modem [really responsible engineering] Greg A. Woods (Jun 26)
- Re: Cable Modem [really responsible engineering] Fletcher E Kittredge (Jun 26)
- Looking for x.org Kurt Kayser (Jun 26)
- Re: Looking for x.org Neil J. McRae (Jun 27)
- Re: Cable Modem [really responsible engineering] Miquel van Smoorenburg (Jun 26)
- Re: Cable Modem [really responsible engineering] Chris Adams (Jun 26)
- Re: Cable Modem [really responsible engineering] Wojtek Zlobicki (Jun 26)
- Message not available
- Re: Cable Modem [really responsible engineering] Wojtek Zlobicki (Jun 27)
- Message not available
- Re: Cable Modem [really responsible engineering] Wojtek Zlobicki (Jun 27)
- Looking for x.org Kurt Kayser (Jun 26)
- Message not available
- Re: Cable Modem [really responsible engineering] Wojtek Zlobicki (Jun 26)
- Re: Cable Modem [really responsible engineering] Charles Sprickman (Jun 26)