0

We have an app / IIS server that runs on a Windows Server 2016 machine that we are able to access the app's functionality from within the VM(http://localhost) but we are not able to access the app from an external machine i.e. http://hostnameofserver.

Windows firewall is turned off, can ping server but cannot telnet to port 80. No recent updates were installed or changes to network configuration.

Are there any other obvious places / techniques I can check / perform to troubleshoot this further?

Thank you!

eclipsedlamp
  • 1
  • From another machine, does the hostnameofserver resolve to the current/correct IP of the VM guest? – mfinni Jun 02 '21 at 01:44
  • Yes, it resolves to the correct ip. – eclipsedlamp Jun 02 '21 at 01:45
  • 1
    https://docs.jexusmanager.com/tutorials/binding-diagnostics.html Run a report to learn the site bindings first. – Lex Li Jun 02 '21 at 03:29
  • Thanks for the suggestions, but the server where the app was on was rolled back to a previous snapshot where the app worked. Very strange that this randomly happened, is it common to have IIS lose bindings to ports? – eclipsedlamp Jun 02 '21 at 23:17

1 Answers1

0

This may be entirely wrong for your situation, but it worked on Server 2012 back in the day. Turn firewall back on. Create 2 rules: 1 ingress (in) and one egress (out) and set them as ANY/ANY. Then turn the firewall back off and see if that works.

n0nuf
  • 11
  • 2