Re: Break-in discovery and forensics tools

[Valdis.Kletnieks () vt edu]

On Wed, 23 Apr 2003 09:18:58 PDT, Hotmail <se_cur_ity () hotmail com>  said:
>  I realize the importance of after incident forensics... What I dont
> understand is logs used in a court for prosecution. Logs are inheritly not
> preservable or physical evidence, it is tamperable from the time the
> external data hits a MAC, if that were the case basicly I could take my logs
> and edit any damn originating ip i choose, send thosse logs to law
> enforcement, and have an innocent person convicted. Logs are nice.. but IMHO
> defeatable in court.

Very good point - which is why things like this are proposed:

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Security Issues in Network Event Logging Working Group of the IETF.

        Title           : Syslog-Sign Protocol
        Author(s)       : J. Kelsey, J. Callas
        Filename        : draft-ietf-syslog-sign-10.txt
        Pages           : 35
        Date            : 2003-4-7
        
This document describes syslog-sign, a mechanism adding origin
authentication, message integrity, replay-resistance, message
sequencing, and detection of missing messages to syslog. Syslog-sign
provides these security features in a way that has minimal
requirements and minimal impact on existing syslog implementations.
It is possible to support syslog-sign and gain some of its security
attributes by only changing the behavior of the devices generating
syslog messages. Some additional processing of the received syslog
messages and the syslog-sign messages on the relays and collectors
may realize additional security benefits.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-syslog-sign-10.txt

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