Recently we've found that many personal firewall products trigger alerts for normal web traffic from Akamai's servers.
An example of a typical personal firewall log entry that indicates normal web traffic might look like:
The firewall has blocked Internet access to your computer (TCP Port 1189) from a512.g.akamai.net (216.200.119.18) (HTTP).
Generally a TCP server listens on a well-known port < 1023 (for example port 80 for HTTP), and a TCP client connects from a port > 1023 assigned by the operating system. So a connection from port 80 of the Akamai server to port 1189,1192,1188,etc... on the client machine, is a normal HTTP transaction.
If you are seeing this alert when you start up your dialup connection, it is likely that some program on your computer is initiating an HTTP
transaction with an Akamaized web site when dialup networking starts up.
We've notified Zone Labs about these alerts and look forward to working with them to resolve this issue of alerts for normal web traffic.
If there are any further questions, please feel free to send them to ccare@akamai.com
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An example of a typical personal firewall log entry that indicates normal web traffic might look like:
The firewall has blocked Internet access to your computer (TCP Port 1189) from a512.g.akamai.net (216.200.119.18) (HTTP).
Generally a TCP server listens on a well-known port < 1023 (for example port 80 for HTTP), and a TCP client connects from a port > 1023 assigned by the operating system. So a connection from port 80 of the Akamai server to port 1189,1192,1188,etc... on the client machine, is a normal HTTP transaction.
If you are seeing this alert when you start up your dialup connection, it is likely that some program on your computer is initiating an HTTP transaction with an Akamaized web site when dialup networking starts up.
We've notified Zone Labs about these alerts and look forward to working with them to resolve this issue of alerts for normal web traffic.
If there are any further questions, please feel free to send them to ccare@akamai.com
- Kevin
Akamai Technologies Customer Care