Using GRE tunnel

❗️ Can use it just when 2 servers commuticated direcly

server1

iptables

-A INPUT -p gre -j ACCEPT
-A RH-Firewall-1-INPUT -i gre-temp -m conntrack --ctstate NEW -j ACCEPT

kernel modules

modprobe ip_gre

ip link

iptunnel add gre-temp mode gre local $SERVER1_IP remote $SERVER2_IP ttl 225
ip a add 10.10.10.1/30 dev gre-temp
ip link set gre-temp up

temp web-server

cd /mnt/$DIR
python -m SimpleHTTPServer

server-2

kernel modules

modprobe ip_gre

ip link

iptunnel add gre-temp mode gre remote $SERVER1_IP local $SERVER2_IP ttl 225
ip a add 10.10.10.2/30 dev gre-temp
ip link set gre-temp up

Now you can use wget for quick transferring date via gre tunnel