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AFN Outage

At approximately 5:00 a.m. AFN (Ashland Fiber Network) and its upstream provider experienced a Distributed Denial of Service (DDOS) attack.  The coordinated attack was directed at IP addresses in the AFN network causing the Internet to either not work or react slowly or intermittently for AFN Internet subscribers.  Full Internet access for AFN customers resumed about 11:40 am.
A DDOS attack is one in which multiple systems are infected (“distributed”) with a virus which then targets a single system causing the “denial of service”.  This type of attack targets the end system and originates from many different sources making it impossible to stop the attack simply by blocking a single IP address.
AFN’s upstream provides protection from such attack.  Unfortunately, this attack was of such a magnitude the upstream equipment could not cope with the impact.  While the AFN network was not down at anytime during the attack and continued to pass Internet traffic to the end user the traffic was blocked or impaired for the duration of the attack.  AFN network personnel and its upstream provider personnel worked together to resolve the issue.
AFN is investigating how it can add the ability to monitor the viability of the Internet service in addition to monitoring Internet traffic flow.  In this case, the AFN network continued to process a high volume of traffic, almost all DDOS related, which then impeded the viability of the Internet Service.

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