Hi all, Having investigated this further, the issue is caused when I use the ICAP plugin referenced in my squid.conf. If I remove the lines then I am able to POST the file. Any suggestions? Thanks On 06/05/2010 17:35, "Nick Cairncross" <Nick.Cairncross@xxxxxxxxxxxxxxx> wrote: Hi, I have a TCP_MISS 000 error being reported for users in the 172.16.0.0 subnet attempting to upload files to a particular internet site. I understand that 000 indicates that the request has been aborted before it could complete? The exact error is: TCP_MISS/000 0 POST http://[domain removed ]/fileuploads? - DIRECT/domain removed I have also tried sending direct via the Squid to no avail - if I bypass the Squid entirely it works ok. Any help gratefully received! Nick --- My squid conf is: http_port vh-squid1:8080 auth_param negotiate program /usr/lib/squid/squid_kerb_auth -r auth_param negotiate children 10 auth_param negotiate keep_alive on auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp auth_param ntlm children 40 auth_param basic program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours cache_peer [upstreamserver] parent 8080 0 no-query proxy-only no-digest default icap_enable on icap_preview_enable on icap_persistent_connections on icap_send_client_ip on icap_send_client_username on icap_client_username_header X-Authenticated-User icap_client_username_encode on icap_service ss reqmod_precache 0 icap://localhost/ssreqmod icap_class c1 ss icap_access c1 allow all access_log /var/log/squid/access.log squid cache_log /var/log/squid/cache.log useragent_log /var/log/squid/useragent.log delay_pools 1 delay_class 1 4 delay_parameters 1 -1/-1 -1/-1 -1/-1 4000000/4000000 acl Java_jvm browser "/etc/squid/ACL/USERAGENTS/USER-AGENTS_JAVA.txt" acl iTunes browser "/etc/squid/ACL/USERAGENTS/USER-AGENTS_APPLE.txt" acl MSNMessenger browser "/etc/squid/ACL/USERAGENTS/USER-AGENTS_MSN.txt" acl AuthenticatedUsers proxy_auth REQUIRED acl URL_ALLOWDstDomains dstdomain "/etc/squid/ACL/URL/URL_ALLOWDstDomains.txt" acl CNP_172SUBNETS src 172.16.0.0/255.255.0.0 acl CNP_SERVERSUBNETS src 172.16.10.0/255.255.255.0 acl StopDirectIP url_regex ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+ acl IP_MSNMessenger src "/etc/squid/ACL/IPADDRESSES/IP_MSNMESSENGER.txt" acl SENDDIRECT_DstDomains dstdomain "/etc/squid/ACL/SENDDIRECT/SENDDIRECT_DSTDOMAINS.txt" acl SENDDIRECT_IPAddresses src "/etc/squid/ACL/SENDDIRECT/SENDDIRECT_IPADDRESSES.txt" acl IP_CONNECTALLOW src "/etc/squid/ACL/IPADDRESSES/IP_CONNECTALLOW.txt" acl localhost src 127.0.0.1/255.255.255.255 acl to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 8080 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl RTMP_ports port 1935 # RTMP acl CONNECT method CONNECT acl POST method POST http_access deny !Safe_ports http_access deny MSNMessenger CNP_172SUBNETS !IP_MSNMESSENGER http_access deny StopDirectIP !IP_CONNECTALLOW http_access deny CONNECT !SSL_Ports !CNP_172SUBNETS http_access deny POST !SSL_Ports !RTMP_ports !CNP_172SUBNETS http_access deny iTunes !CNP_172SUBNETS http_access deny Java_jvm !CNP_172SUBNETS http_access allow CONNECT CNP_172SUBNETS http_access allow POST CNP_172SUBNETS http_access allow iTunes CNP_172SUBNETS http_access allow Java_jvm CNP_172SUBNETS http_access allow URL_ALLOWDstDomains http_access allow AuthenticatedUsers always_direct allow SENDDIRECT_DstDomains always_direct allow SENDDIRECT_IPAddresses http_access allow localhost delay_access 1 allow AuthenticatedUsers !CNP_SERVERSUBNETS delay_access 1 deny all http_access deny to_localhost never_direct allow all snmp_access deny CNP_172SUBNETS cache deny all http_access deny all ** Please consider the environment before printing this e-mail ** The information contained in this e-mail is of a confidential nature and is intended only for the addressee. 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