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FWX_E_TCP_NOT_SYN_PACKET_DROPPED
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FWX_E_TCP_NOT_SYN_PACKET_DROPPED - 9.May2007 10:25:18 AM
xcoder
Posts: 4
Joined: 9.May2007
Status: offline
Hi; I began to use ISA server 2006 and zywall firewall (ADSL modem > Zywall > isa 2006 > intranet) When I want to login yahoo.com.. Isa Initiated a Connection to yahoo.com's ip and download some of page then isa was closed connection before page not complately display at last localhost try to connect yahoo again but isa was deny connection (isa said the reason is FWX_E_TCP_NOT_SYN_PACKET_DROPPED ) ?????? Thanks..
< Message edited by xcoder -- 9.May2007 10:26:33 AM >
RE: FWX_E_TCP_NOT_SYN_PACKET_DROPPED - 20.May2007 11:18:54 AM
tshinder
Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Is there a rule allowing access to the site? Are the clients configured to use HTTP 1.1 through proxy connections? Tom
_____________________________ Thomas W Shinder, M.D.
RE: FWX_E_TCP_NOT_SYN_PACKET_DROPPED - 22.May2007 8:36:02 AM
tshinder
Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Enable HTTP 1.1 through proxy connections and see if that fixes the problem. HTH, Tom
_____________________________ Thomas W Shinder, M.D.
RE: FWX_E_TCP_NOT_SYN_PACKET_DROPPED - 22.May2007 9:28:39 AM
xcoder
Posts: 4
Joined: 9.May2007
Status: offline
quote: ORIGINAL: tshinder Enable HTTP 1.1 through proxy connections and see if that fixes the problem. HTH, Tom I enable http1.1 proxy but nothing change :( I saw -isa external ip goes to internet all my web request- in my log.. is it normal? Thanks
< Message edited by xcoder -- 22.May2007 9:30:19 AM >
RE: FWX_E_TCP_NOT_SYN_PACKET_DROPPED - 23.May2007 11:07:23 AM
tshinder
Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
In its role as Web proxy, the ISA Firewall does generate a new request. This ISA firewall has a least two NICs, right? Tom
_____________________________ Thomas W Shinder, M.D.
RE: FWX_E_TCP_NOT_SYN_PACKET_DROPPED - 24.May2007 1:55:59 AM
xcoder
Posts: 4
Joined: 9.May2007
Status: offline
Yes there is two NICs. I tryed it on webproxy,securenat and firewall client, this result code(Not sycn) came all times.. But securenat client to reach yahoo.
RE: FWX_E_TCP_NOT_SYN_PACKET_DROPPED - 25.May2007 12:35:00 PM
tshinder
Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Perhaps a bug in the Zywall? Is the definition of the ISA Firewall's internal network correct and the internal and external interfaces are on different network IDs? Tom
_____________________________ Thomas W Shinder, M.D.
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