Antony Thank you. My Firewall eth0: 192.168.1.180 eth1:192.168.2.180 ip_forwarding enable and more /proc/sys/net/ipv4/ip_forward =1 iptables -t nat -A POSTROUTING -s 192.168.5.0/255.255.255.0 -o eth0 -j MASQUERADE This is no problem above it.The cilents could connect internet. And then i install squid 3.2.11.i added iptables -t nat -A PREROUTING -i eth1-p tcp --dport 80 -j REDIRECT --to-ports 3128 and save it. i redirect succesfully 80 port.i see it at tailf /var/log/squid3/access.log But clients can not internet . My squid3 -k parse... 2016/02/21 14:20:56| Startup: Initializing Authentication Schemes ... 2016/02/21 14:20:56| Startup: Initialized Authentication Scheme 'basic' 2016/02/21 14:20:56| Startup: Initialized Authentication Scheme 'digest' 2016/02/21 14:20:56| Startup: Initialized Authentication Scheme 'negotiate' 2016/02/21 14:20:56| Startup: Initialized Authentication Scheme 'ntlm' 2016/02/21 14:20:56| Startup: Initialized Authentication. 2016/02/21 14:20:56| Processing Configuration File: /etc/squid3/squid.conf (depth 0) 2016/02/21 14:20:56| Processing: acl SSL_ports port 443 2016/02/21 14:20:56| Processing: acl Safe_ports port 80 # http 2016/02/21 14:20:56| Processing: acl Safe_ports port 21 # ftp 2016/02/21 14:20:56| Processing: acl Safe_ports port 443 # https 2016/02/21 14:20:56| Processing: acl Safe_ports port 70 # gopher 2016/02/21 14:20:56| Processing: acl Safe_ports port 210 # wais 2016/02/21 14:20:56| Processing: acl Safe_ports port 1025-65535 # unregistered ports 2016/02/21 14:20:56| Processing: acl Safe_ports port 280 # http-mgmt 2016/02/21 14:20:56| Processing: acl Safe_ports port 488 # gss-http 2016/02/21 14:20:56| Processing: acl Safe_ports port 591 # filemaker 2016/02/21 14:20:56| Processing: acl Safe_ports port 777 # multiling http 2016/02/21 14:20:56| Processing: acl CONNECT method CONNECT 2016/02/21 14:20:56| Processing: http_access allow localhost manager 2016/02/21 14:20:56| Processing: http_access deny manager 2016/02/21 14:20:56| Processing: http_access deny !Safe_ports 2016/02/21 14:20:56| Processing: http_access deny CONNECT !SSL_ports 2016/02/21 14:20:56| Processing: acl sec src 192.168.5.0/24 2016/02/21 14:20:56| Processing: http_access allow sec 2016/02/21 14:20:56| Processing: http_access allow localhost 2016/02/21 14:20:56| Processing: http_access deny all 2016/02/21 14:20:56| Processing: http_port 3128 intercept ssl-bump generate-host-certificates=on dynamic_cert_mem_cache_size=4MB key=/etc/mydlp/ssl/private.pem cert=/etc/mydlp/ssl/public.pem 2016/02/21 14:20:56| Starting Authentication on port 0.0.0.0:3128 2016/02/21 14:20:56| Disabling Authentication on port 0.0.0.0:3128 (interception enabled) 2016/02/21 14:20:56| Processing: http_port 3129 intercept ssl-bump generate-host-certificates=on dynamic_cert_mem_cache_size=4MB key=/etc/mydlp/ssl/private.pem cert=/etc/mydlp/ssl/public.pem 2016/02/21 14:20:56| Starting Authentication on port 0.0.0.0:3129 2016/02/21 14:20:56| Disabling Authentication on port 0.0.0.0:3129 (interception enabled) 2016/02/21 14:20:56| Processing: always_direct allow all 2016/02/21 14:20:56| Processing: ssl_bump allow all 2016/02/21 14:20:56| Processing: sslproxy_cert_error allow all 2016/02/21 14:20:56| Processing: sslproxy_flags DONT_VERIFY_PEER 2016/02/21 14:20:56| Processing: sslcrtd_program /usr/lib/squid3/ssl_crtd -s /var/lib/ssl_db -M 4MB 2016/02/21 14:20:56| Processing: sslcrtd_children 5 2016/02/21 14:20:56| Processing: cache_dir ufs /var/spool/squid3 10000 16 256 2016/02/21 14:20:56| Processing: coredump_dir /var/spool/squid3 2016/02/21 14:20:56| Processing: refresh_pattern ^ftp: 1440 20% 10080 2016/02/21 14:20:56| Processing: refresh_pattern ^gopher: 1440 0% 1440 2016/02/21 14:20:56| Processing: refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 2016/02/21 14:20:56| Processing: refresh_pattern . 0 20% 4320 2016/02/21 14:20:56| Processing: dns_v4_first on 2016/02/21 14:20:56| Initializing https proxy context 2016/02/21 14:20:56| Initializing http_port 0.0.0.0:3128 SSL context 2016/02/21 14:20:56| Using certificate in /etc/mydlp/ssl/public.pem 2016/02/21 14:20:56| Using private key in /etc/mydlp/ssl/private.pem 2016/02/21 14:20:56| Initializing http_port 0.0.0.0:3129 SSL context 2016/02/21 14:20:56| Using certificate in /etc/mydlp/ssl/public.pem 2016/02/21 14:20:56| Using private key in /etc/mydlp/ssl/private.pem -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-None-Aborted-problem-tp4675901p4676089.html Sent from the Squid - Users mailing list archive at Nabble.com. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users