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| Subject: | DOS Attack? |
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| Date: | Wed, 24 Nov 2004 19:22:40 -0700 |
Hi List, I'm currently experiencing network outages due to what appears to be DOS attacks. I'm running a wireless ISP using a Cisco 2611 and CBAC and I have a /24 public address range. During the outage I can see traffic from a single external host sending thousands of packets to a single internal host. I don't have port 80 inbound open in my ACLs so I don't understand how the external host is even able to contact the internal host to begin with. Secondly, how is it possible for an attack on 1 internal host to cripple the rest of my network? Any feedback would be welcome. Thanks. shawn
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