Firewall Wizards mailing list archives

RE: Backup of DMZ Servers


From: Crispin Harris <Harris_C () DeMorgan com au>
Date: Fri, 1 Jun 2001 15:03:50 +1000

I have a "standard" method for backing up firewalls and other dedicated
service systems (such as DNS, IDS, NTP, SecurID).

The initial requirement is to have a standard build (preferably something
that you can stick-in-the-cd and boot cdrom).

A second assumption is that the systems do not log locally. (High volume
transient content is thus sent elsewhere).

Then only backup the configuration and control files. While this varies from
application-to-application, then list is still small enough to get a .tar.gz
onto a floppy disk :-).

This turns into a nice (small), simple (Gauntlet 4-esque) backup mechanism.

The major assumptions are VERY important, because without them, the backup
method does not contain enough information to rebuild an identical system.
The nice thing about this is that the backup is then (almost entirely)
hardware independent. (Small changes might need to be made w.r.t. i/f
names.)

Regards,
        Crispin Harris

-----Original Message-----
From: Marcus J. Ranum [mailto:mjr () nfr com]
Sent: Friday, 1 June 2001 2:22 PM
To: jlewis () jasonlewis net; 'Hartmann, Josef'; firewall-wizards () nfr com
Subject: RE: [fw-wiz] Backup of DMZ Servers


Another trick (depending on how many/often files change on your
DMZ servers) is to just do a
backup incremental dump | compress | uuencode | mail backup@inside

if your mail server is backed up automatically, then you're covered.

mjr.
---
Marcus J. Ranum     Chief Technology Officer, NFR Security Inc.
Work:  http://www.nfr.com
Play: http://www.ranum.com

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