Olá pessoal, conseguir bloquear o ultrafsurf com as seguintes informações:
Utilizei as informações passadas por este artigo:
http://www.vivaolinux.com.br/artigo/Como-bloquear-o-Ultrasurf-solucao-definitiva-%28iptables-+-Fail2...
em conjunto com as seguintes regras no final do iptables:
# BLOQUEIO ULTRASURF
iptables -I FORWARD -p tcp --dport 19769 -j DROP
iptables -I FORWARD -p tcp --dport 55433 -j DROP
iptables -I FORWARD -p tcp --dport 33190 -j DROP
iptables -I FORWARD -p tcp --dport 19769 -j DROP
iptables -I FORWARD -p tcp --dport 23620 -j DROP
iptables -I FORWARD -p tcp --dport 3103 -j DROP
iptables -I FORWARD -p tcp --dport 3162 -j DROP
iptables -I FORWARD -p tcp --dport 2000:3000 -j DROP
iptables -I FORWARD -p tcp -d 65.49.2.0/24 -j DROP
iptables -I FORWARD -p tcp -s 65.49.2.0/24 -j DROP
iptables -I FORWARD -p tcp -d 65.49.14.0/24 -j DROP
iptables -I FORWARD -p tcp -s 65.49.14.0/24 -j DROP
iptables -I FORWARD -p tcp -d 208.43.202.0/24 -j DROP
iptables -I FORWARD -p tcp -s 125.226.159.29 -j DROP
iptables -I FORWARD -p tcp -d 36.227.82.56 -j DROP
iptables -I FORWARD -p tcp -d 36.227.82.56 -j DROP
iptables -I FORWARD -p tcp -d 65.49.2.22 -j DROP
iptables -I FORWARD -p tcp -d 66.245.209.153 -j DROP
iptables -I FORWARD -p tcp -d 175.180.205.104 -j DROP
iptables -I FORWARD -d 114.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 114.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -d 112.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 112.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -d 59.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 59.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -d 118.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 118.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -d 61.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 61.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -d 1.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 1.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 122.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -d 122.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 124.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -d 124.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -s 111.0.0.0/8 -p tcp --destination-port 443 -j DROP
iptables -I FORWARD -d 111.0.0.0/8 -p tcp --destination-port 443 -j DROP