[Gllug] Net outages caused by worm possibly

[Jason Clifford]

On Mon, 27 Jan 2003, Tethys wrote:

> >What about replication when done across different sites?
> 
> Use a VPN (either via IPsec, or just an ssh tunnel).

A VPN is not going to protect you from a worm such as the MS-SQL users 
experienced over the weekend.

While a VPN will allow you to control traffic on your network you will 
have drastically reduced your security as you are unlikely to control it 
at the other site(s).

The worm that his at the weekend was particularly nasty as it seems to 
have been designed with a view to causing severe network congestion and 
thus crippling switches, routers, etc. Not only did it cause problems for 
SQL services but it also denied access to entire networks.

If it entered a network via a VPN it is likely that it would have cross 
infected other local MS-SQL servers and caused disruption within the 
company network.

Jason Clifford
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