Iptables -- Want to add my IP as a trusted / allowed IP address

I'd like to add my IP address as a trusted IP in IPtables (trying to configure a VPN, and not sure if it's my firewall that's blocking me).

I attempted this syntax, but it only seemed to lock up Iptables:
Code: 
iptables -t nat -A POSTROUTING -s my_home_ip -o eth0 -j SNAT --to destination_ip

iptables -t nat -A PREROUTING -s destination_ip -i eth0 -j DNAT --to my_home_ip
Which leads to another question. For my destination, do I want the IP of the firewall, or the IP of an internal server that I'd like to access?


Thank you!

 

 

 

 

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