Firewall Wizards mailing list archives
Re: SCADA (or: How I learned to love receiving FWW in digest form)
From: Mike Barkett <mbarkett () us checkpoint com>
Date: Fri, 17 Apr 2009 08:23:19 -0700
Yeah, I know the subject line makes me sound like a fuddy-duddy. Anyway, because this is apparently a last-one-to-post-wins thread, I figured I'd chime in. It seems that all of us subscribe to differing degrees of the same possibly incorrect notion... that all systems must be connected to something. If a system risks failure due to being connected to an infrastructure that will also fail along with it, then maybe the net value of such connectivity is greatly diminished. I believe Marcus' artist friend rather elegantly made a similar point. We've already talked about solving the logging problem with physical air gaps and a connectionless logger. Save for physical access and possibly a dedicated leased line to an isolated emergency outpost (for example, to try to remediate things if physical access is too dangerous for humans, or to manually apply patches IF applicable), why introduce any additional risk? -MAB _______________________________________________ firewall-wizards mailing list firewall-wizards () listserv icsalabs com https://listserv.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Mike Barkett (Apr 17)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Dotzero (Apr 17)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Marcus J. Ranum (Apr 17)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Brian Loe (Apr 18)
- Message not available
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Bret Watson (Apr 18)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Brian Loe (Apr 18)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) ArkanoiD (Apr 18)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Brian Loe (Apr 19)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Paul D. Robertson (Apr 19)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Brian Loe (Apr 20)
- Re: SCADA (or: How I learned to love receiving FWW indigest form) Michael Balasko (Apr 20)
- Re: SCADA (or: How I learned to love receiving FWW in digest form) Dotzero (Apr 17)