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Why does PRTG block IIS SSL sites?

Votes:

0

I have a server with IPs: 192.168.5.10 - .12. I have bound PRTG to .12 with SSL (443). I have disabled the port 80 redirect with the registry setting indicated in another thread.

When configured in this manner, my IIS sites bound with SSL will not run. I'm not sure if the problem is PRTG or IIS, but I suspect PRTG.

I have two sites in IIS 7 that both use SSL on port 443. They are bound to the .10 and .11 IPs only. Neither can be started once PRTG is running. Likewise, if IIS is started first, PRTG cannot start.

I have no idea what is causing this conflict as everything should be bound to its own distinct IP. My only guess is that internally PRTG is actually binding to all IPs on the machine on port 443.

In IIS, trying to start a site gives the error: "The process cannot access the file because it is being used by another process." This error generally indicates a binding error.

Running netstat -ano -p tcp only seems to show the 443 port and 1801 being bound though:

TCP    192.168.5.12:443       0.0.0.0:0              LISTENING       3160

At this point I'm stumped. I've tried restarting both the IIS service and PRTG with no success. If PRTG is stopped, both SSL sites can be started and run without issue.

iis port ssl

Created on Oct 8, 2010 4:16:25 PM

Last change on Oct 15, 2010 2:41:44 PM by  Daniel Zobel [Product Manager]



Best Answer

Accepted Answer

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I posted this on ServerFault.com and found an answer that worked for me. If possible, I'd like to request that HTTPS be added on alternate ports.

http://serverfault.com/questions/189181/allow-two-services-to-bind-to-port-ssl-443-on-different-ips

Created on Oct 15, 2010 3:44:41 PM



5 Replies

Votes:

0

I still haven't found a solution to this. Is it possible to run PRTG under SSL on a different port? That would solve the problem for now at least.

Created on Oct 8, 2010 8:15:21 PM



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0

When setting PRTG to port 443, the port is blocked for the PRTG web server. Sorry, there is no way to run SSL on a different port. However, you can of course run PRTG on a custom port using http connections only.

Created on Oct 15, 2010 2:40:59 PM by  Daniel Zobel [Product Manager]

Last change on Oct 15, 2010 2:42:11 PM by  Daniel Zobel [Product Manager]



Accepted Answer

Votes:

0

I posted this on ServerFault.com and found an answer that worked for me. If possible, I'd like to request that HTTPS be added on alternate ports.

http://serverfault.com/questions/189181/allow-two-services-to-bind-to-port-ssl-443-on-different-ips

Created on Oct 15, 2010 3:44:41 PM




Votes:

0

Citezein wrote:

> If possible, I'd like to request that HTTPS be added on alternate ports.


As of version 12.3.4 [Stable] a custom SSL port for the PRTG web server can now be defined.

Quote from the version history:

Improved [Core]: PRTG web server can now run on https (SSL) on a user specific port (other than 443)

Created on Dec 3, 2012 2:15:07 PM by  Daniel Zobel [Product Manager]




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