DNAT TO IIS SERVER

Hello Leonardo Rebelo,

Thank you for reaching out to the community, please verify with the config guide once -
> https://docs.sophos.com/nsg/sophos-firewall/18.5/Help/en-us/webhelp/onlinehelp/AdministratorHelp/RulesAndPolicies/NATRules/RulesPoliciesCreateDNATAndFirewallRulesForInternalServers/index.html

Hi 

I just checked the guide, and it's still not working.. I have no idea why.

PM me if still does not work:
> https://docs.sophos.com/nsg/sophos-firewall/18.5/Help/en-us/webhelp/onlinehelp/AdministratorHelp/RulesAndPolicies/FirewallRules/FirewallRulesDNATServerAccessAssistant/index.html
> https://docs.sophos.com/nsg/sophos-firewall/18.5/Help/en-us/webhelp/onlinehelp/AdministratorHelp/RulesAndPolicies/NATRules/RulesPoliciesCreateDNATAndFirewallRulesForInternalServers/index.html

Change "Original Service" to any and try again - if your source device is behind a NAT then source port is likely not "50002"

So i did some troubleshooting, and downgraded the firmware, and this is the concluse:

We have 2 iis web servers running: 

1 at the 443 https port
other at a custom port

if i deactivate the first server and activate the second(the one we had thrubble) with port 443 , than the portforwarding works great. 

So i think its not a sophos issue , but just iis that for some reason don't accept external connections to a custom port. 

Thank you for the update Leonardo Rebelo, it was a pleasure to work with you !!

Thank you for your time and troubleshooting! My pleasure. 

Thank you for your time and troubleshooting! My pleasure.