Debian as router

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Make a debian box router

Enable routing

Temporal 

sudo sysctl -w net.ipv4.ip_forward=1 #

Permanent 

sudo nano /etc/sysctl.conf
   net.ipv4.ip_forward = 1

Create NAT rule at IPTABLES

sudo iptables -t nat -A POSTROUTING -s 15.17.170.215/32 -o tun0 -j MASQUERADE

List iptables nat rules

sudo iptables -t nat -L -n -v
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