It's funny. 4:30 in the morning, the net is really sluggish and I see news...
Cisco warned Internet service providers and corporations late Wednesday that a flaw in its router software could allow attackers to freeze Cisco routers and stop the flow of network data through the devices. Cisco didn't initially comment on the issue. Late Wednesday, the company posted details of the flaw in an advisory on its Web site. Basically the Cisco IOS has a bug in it which a user may send packets that can lock up the appliance. The router would stay down until rebooted. Earlier on Wednesday, ISPs were scrambling to schedule maintenance time for their networks. Messages posted to a network administrator's mailing list indicated that AT&T, Level 3, Cogent Communications and Sprint had all warned customers of upcoming maintenance.
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