Hi there!
I've setup dual Windows Server 2012 R2 VM's with NLB & IIS ARR setup on them. They're very light weight & design to simply pass traffic through to the internal Web Servers. I've been testing them internally for several months & have found them rock solid... I've had Skype for Business Server using them for a while externally & it APPEARS to be working 100%.
- Internally, HTTP redirects to HTTPS
- Externally HTTP "This page can't be displayed", SonicWALL shows inbound traffic, no outbound.
- Internally HTTPS shows SharePoint website on WEBSITE.COM.AU
- Externally HTTPS "This page can't be displayed", SonicWALL shows inbound traffic, no outbound.
- SonicWALL Firewall rules have been triple checked. Both 80 & 443 are allowing traffic on the correct interface.
- SonicWALL inbound NAT rules have been triple checked. Both 80 & 443 are going to NLB LAN IP.
- Firewall on all IIS Servers involved have explicit allows for 80 & 443.
- Bindings on all IIS Servers ARE explicit with HTTPS secured using Wildcard GoDaddy Certificate.
- URL Rewrite is using the route to server farm function.
My above comments about no outbound packets makes sense, as the response packets wouldn't be coming from the Network Load Balancer / ARR servers, they'd be coming directly from the SharePoint Server. I've confirmed the SonicWALL allows all outbound requests from this server.
I'm sure there's something obvious I'm missing, however at the moment I can't see what it could be! We've got a group of technicians in our team, however IIS is something that seems to send most running for the hills.