[WebServer] http connection-> Reset(RST) [ISA] ->FIN! [Web Client] Observed consequences: -When posting to web forums with HTTP POST and reply from webserver is for some internet spaghetti reason broken, ISA gets tcp ip http connection ending with RST ISA translates it to web client behind it as FIN ... which leads to web clients believing they got data correctly completely! On web forums this results in double posting (as users don't see their reply). -AV updating services might not update their signature databases on time. This might cause potential problem with web-services and other communication utilizing HTTP protocol. REASON: Web applications reports wrong data retrieval only if TCP/IP carrying http ends with Reset(RST) packet. WORKAROUND: adding data integrity checking into data/sub-protocol utilizing http carrier. Tested on ISA2k4 and ISA2k: With Kind Regards David Farinic. This mail was checked for viruses by GFI MailSecurity. GFI also develops anti-spam software (GFI MailEssentials), a fax server (GFI FAXmaker), and network security and management software (GFI LANguard) - www.gfi.com