I would like to access the NetVanta 3120 from the internet. How do I go about setting this up?
Do I just need to add a ACL and port forward to the NetVanta?
It seems that the web interface is disabled by default on the WAN interface since I can't access it.
From the link you posted it seems that I need to allow port 80 or 443 through to the firewall and then I should be able to access it from the internet.
Is that correct?
Correct.
I recommend using 443 (https) for security reasons.