Squid is in both modes. It accepts directly configured proxy, and interception mode. Heres my configuration file (squid.conf). Its auto generated from a system daemon which i've written. acl localnet src 10.0.0.0/8 acl localnet src 172.16.0.0/12 acl localnet src 192.168.0.0/16 acl localnet src fc00::/7 acl localnet src fe80::/10 acl SSL_ports port 443 acl CONNECT method CONNECT dns_nameservers 127.0.0.1 hierarchy_stoplist cgi-bin ? http_access allow manager localhost http_access deny manager http_access deny CONNECT !SSL_ports refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern . 0 20% 4320 acl localdst dst 127.0.0.1/32 acl localdst dst 192.168.100.0/24 acl localdst dst 192.168.150.0/24 acl localdst dst 192.168.50.0/24 acl localdst dst 192.168.175.0/24 acl localdst dst 172.16.10.0/24 acl source_Vendas_443 src 192.168.50.3 acl dport_Vendas_443 port 443 tcp_outgoing_address 189.27.236.136 source_Vendas_443 dport_Vendas_443 !localdst acl source_Devel443 src 192.168.150.177 acl source_Devel443 src 192.168.150.13 acl source_Devel443 src 192.168.150.8 acl source_Devel443 src 192.168.150.95 acl source_Devel443 src 192.168.150.196 acl dport_Devel443 port 443 tcp_outgoing_address 189.27.236.136 source_Devel443 dport_Devel443 !localdst acl source_Wireless443 src 192.168.175.242 acl source_Wireless443 src 192.168.175.21 acl dport_Wireless443 port 443 tcp_outgoing_address 187.113.225.9 source_Wireless443 dport_Wireless443 !localdst acl source_WiFi443 src 192.168.175.0/24 acl dport_WiFi443 port 443 tcp_outgoing_address 189.27.236.136 source_WiFi443 dport_WiFi443 !localdst acl source_voip src 192.168.50.33 tcp_outgoing_address 187.113.225.9 source_voip !localdst acl source_L4D2 src 192.168.100.78 tcp_outgoing_address 187.113.225.9 source_L4D2 !localdst external_acl_type securegateway_cfs ipv4 %DST %PROTO %PORT /usr/bin/squid_filter acl grp_IDB src 192.168.100.0/24 192.168.150.0/24 192.168.175.0/24 172.16.10.0/24 acl cat_Teste external securegateway_cfs 09,0B,0E,10,12,19,56,58,5C http_access deny cat_Teste grp_IDB acl out_balance random 1/2 tcp_outgoing_address 187.113.225.9 out_balance !localdst tcp_outgoing_address 189.27.236.136 out_balance !localdst http_access allow localnet http_access allow localhost http_access deny all pid_filename /var/run/squid.pid half_closed_clients off memory_replacement_policy heap GDSF cache_replacement_policy heap LFUDA cache_effective_user squid cache_effective_group squid cache_mem 8 MB memory_pools off workers 1 visible_hostname firewall.securegateway.localnet coredump_dir none access_log daemon: logfile_daemon /usr/bin/squid_logger cache_log /var/squid/logs/cache.log http_port 3128 http_port 3129 intercept qos_flows local-hit=0x1c NB: when testing, I also disabled ACLs, extenal ACLs, Logging daemon, but no sucess at all. Squid still crashes on the same place. 2014-04-03 19:12 GMT-03:00 Eliezer Croitoru <eliezer@xxxxxxxxxxxx>: > On 03/20/2014 05:42 PM, Cassiano Martin wrote: >> >> Squid is in transparent mode. > > tproxy or redirect targets on iptables? > > Eliezer