Network Namespaces
setup
install netns helper
wget https://raw.githubusercontent.com/Lekensteyn/netns/master/netns -O /bin/netns chmod +x /bin/nets
uncomment “net.ipv4.ip_forward=1” in /etc/sysctl.d/99-sysctl.conf
enable NAT
iptables -t nat -A POSTROUTING -o ens3 -j MASQUERADE
iptables-save > /etc/firewall
bash prompt, add to .bashrc
_ns_name=$(ip netns identify 2>/dev/null)
PS1=${_ns_name:+(${_ns_name})}${PS1}
unset _ns_name
use
create namespace “0”
netns 0 start
run bach inside
netns 0 exec
permit routing
ip netns exec netns0 sysctl -w net.ipv4.ip_forward=1 iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE
inside NS
iptables -t nat -A PREROUTING -d 10.9.0.2 -p tcp --dport 443 -j DNAT --to-destination 10.139.231.1:443
curl -k --header "Host: www.xxx.it" https://10.9.0.2:443/Info-ws/services/xxx/