pusiste el bloqueo?
iptables -A FORWARD -i $INT_IN -p udp -m udp --dport 80 -j REJECT --reject-with icmp-port-unreachable #comment#Block QUIC
iptables -A FORWARD -i $INT_IN -p udp -m udp --dport 443 -j REJECT --reject-with icmp-port-unreachable #comment#Block QUIC
#!/bin/bash
echo ";;;;;;;;;;;;;;;;;;;;;;;"
echo "; RaptorCache ;"
echo ";;;;;;;;;;;;;;;;;;;;;;;"
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -F
iptables -X
iptables -Z
iptables -t nat -F
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -t nat -P PREROUTING ACCEPT
iptables -t nat -P POSTROUTING ACCEPT
iptables -A INPUT -i lo -j ACCEPT #comment#Localhost
iptables -A INPUT -s 192.168.1.0/24 -j ACCEPT #comment#Input LAN
iptables -A INPUT -s 192.168.5.0/24 -j ACCEPT #comment#Input LAN
iptables -A FORWARD -i eth0 -p udp -m udp --dport 80 -j REJECT --reject-with icmp-port-unreachable #comment#Block QUIC
iptables -A FORWARD -i eth0 -p udp -m udp --dport 443 -j REJECT --reject-with icmp-port-unreachable #comment#Block QUIC
# ------------------------------------| Redireccion |--------------------------------------
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128 #comment#Redirect 3128
Esta es mi configuración no se que estará mal lo tengo en paralelo con el MK