Squid-Kit-Transparenter-Proxy

Schaubild

[Bearbeiten]

Vorraussetzung

• Squid-Kit-2

Firewall Regeln für den Transparenten Proxy

(iptables REDIRECT

• iptables -t nat -A PREROUTING -j REDIRECT -s 172.16.113.0/24 -p tcp --dport 80 --to-port 3129
• iptables -t nat -A PREROUTING -j REDIRECT -s 172.16.113.0/24 -p tcp --dport 443 --to-port 3130

(nftables REDIRECT)

Tabelle und Kette anlegen

• nft add table ip nat
• nft add chain ip nat prerouting '{ type nat hook prerouting priority dstnat; policy accept; }'

HTTP und HTTPS lokal umleiten

• nft add rule ip nat prerouting tcp dport 80 redirect to :3129
• nft add rule ip nat prerouting tcp dport 443 redirect to :3130

Änderungen in der /etc/squid/squid.conf

#transparenter Zugriff unverschlüsselt
http_port 3129 intercept
#transparenter Zugriff verschlüsselt wichtig https_port
https_port 3130 ssl-bump intercept cert=/etc/squid/certs/squid_proxyCA.pem generate-host-certificates=on options=NO_SSLv3,NO_TLSv1,NO_TLSv1_1,SINGLE_DH_USE,SINGLE_ECDH_USE

ssl_bump bump all

Restart von Squid

• systemctl restart squid