Re: Comcast is using Sandvine to manage P2P Connections

Author	All Replies
funchords Hello Premium,MVM join:2001-03-11 Yarmouth Port, MA kudos:6	reply to Anonymous Coward Re: Comcast is using Sandvine to manage P2P Connections said by Anonymous Coward : Has anyone tried configuring their firewall to block incoming RST packets? Yes, I tried this with linux iptables, and got really excited when it seemed to thwart the problem. But then I realized that the connections were dead, but they simply weren't being removed from the active list. I believe this means that the RST is sent both ways. The response to an RST is not a FIN so the TCP/IP stack doesn't know the connection has been dropped. Good thinking, though. said by no oper : I also noticed, that bit 6 of the IP TOS field was set on all these reset packets. I hadn't noticed. They could have been set, or not. Are you directly connected? -- or could your router be adding that bit for use on the LAN? -- Robb Topolski -= funchords.com =- Hillsboro, Oregon USA ~ Keeper of the D-Link FAQ ~ Did you Search? ~ More features, Free! Join BBR! ~
	to forum · permalink · 2007-07-22 20:39:54 · (locked)
no oper @comcast.net	said by funchords: I hadn't noticed. They could have been set, or not. Are you directly connected? -- or could your router be adding that bit for use on the LAN? I'm not directly connected, there's a router on the way, but this bit is set only on the reset packets I'm receiving on the bittorrent connections and nowhere else.
no oper @comcast.net	to forum · permalink · 2007-07-22 22:08:15 · (locked)
koitsu Premium,MVM join:2002-07-16 Mountain View, CA kudos:19	reply to funchords said by funchords: I believe this means that the RST is sent both ways. The response to an RST is not a FIN so the TCP/IP stack doesn't know the connection has been dropped. Correct . See the below stateful diagram (PDF): »www.cse.iitb.ac.in/perfnet/cs456···diag.pdf -- Making life hard for others since 1977. I speak for myself and not my employer/affiliates of my employer.
	to forum · permalink · 2007-07-23 10:36:56 · (locked)

US Cable Support > Comcast HSI > Comcast is using Sandvine to manage P2P Connections