I'm trying to setup tproxy with Squid 3.5 for the purpose of having the same outgoing ip as the connecting ip. (I have thousands of IPs and I can not add them one by one)
I started with a fresh install of Debian 9, installed Squid by
apt install squid
then I added
http_port 3129 tproxy
to squid.conf
I then ran the following commands for iptables
iptables -t mangle -N DIVERT
iptables -t mangle -A DIVERT -j MARK --set-mark 1
iptables -t mangle -A DIVERT -j ACCEPT
iptables -t mangle -A PREROUTING -p tcp -m socket -j DIVERT
iptables -t mangle -A PREROUTING -p tcp --dport 80 -j TPROXY --tproxy-mark 0x1/0x1 --on-port 3129
I can use the proxy with no problems on port 3128, but on Firefox I get a message "The proxy server is refusing connections" when I set the proxy to port 3129. Did I miss any steps or am I doing something wrong?
below is my full squid.conf file
acl SSL_ports port 443
acl Safe_ports port 80
acl Safe_ports port 21
acl Safe_ports port 443
acl Safe_ports port 70
acl Safe_ports port 210
acl Safe_ports port 1025-65535
acl Safe_ports port 280
acl Safe_ports port 488
acl Safe_ports port 591
acl Safe_ports port 777
acl CONNECT method CONNECT
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
http_access allow localhost
http_access allow all
http_port 3128
http_port 3129 tproxy
coredump_dir /var/spool/squid
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
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