Thursday, September 27, 2007

Update on Comcast's Man in the Middle Attacks on Lotus Notes

For those of you Notes client users suffering from Comcast's "filtering", there is a great post by my colleague Kevin Kanarski who has details of packet captures that result from sending an email with a 6MB attachment from a Notes client using the Internet connection.

These captures, from both ends, clearly show that Comcast is imitating both the client and server in sending RST [reset] packets to the other end of the connection. Neither the client nor the server generated any RST packets, so this is definitely shady behavior by Comcast.

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