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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Proactive steps to prevent DDOS?
There isn't a lot that can be done, but there are a few steps you can take to "get ready" for a DDOS attack.At 4:15 PM -0800 1/26/01, Sean Donelan wrote: Fine, does this work better for you? Help me, what proactive steps can I take to protect my network from a DDOS? --Make sure you have monitoring of your routers or firewalls in place so you'll get an early alert of a possible DOS attack. This will at least allow you to start working on the problem (and drafting press releases :-). --Talk to all of your up stream providers so you know how to contact and work with them if they are a source of a DOS attack against you. If your up stream provider isn't willing to work with you on this, start the process of getting a new up stream provider. --Look into the systems that are being developed and starting to become available that help automate the work to diagnose DDOS attacks. Encourage your up streams to do the same. --Make sure you have in place the filtering on your own networks that you wish everyone else had in place on their networks. This won't protect you from being attacked, but it will prevent you and your users from attacking others (or at least using spoofed IP addresses to do so), and that in turn may prevent you from being the target of a retaliatory DOS attack. It can also prevent or limit the spread of a DOS attack that originates within your network or from someone down stream. From your customer's point of view there may not be much difference between you being the source of or the target of a DOS attack--either way performance is likely to be poor and customers are likely to be unhappy. -Jeff Ogden Merit
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