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WAF problem with internal Webserver

Maverick487
Hi,

i try to publish our webserver with astaro waf. I create a host object with the internal ip-address of the real webserver.
I have the problem that my hostheaders on iis not work if i use the ip-address in the web application firewall.
So i create a new host object on the asg with the dns host name of the internal webserver. This is a stand allone server. After this i create a static dns entry on the asg. From my astaro i can resolve the server host name with the dns-lookup.

On the web application firewall log i get a error messages:
proxy: DNS lookup failure for: webserver-01 

how can i solve this problem?


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  • 0
    Maverick, it's easier to help when you supply a complete line from the log.  Also, please show what you see in the DNS log at the same time?

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson
    Hi,

    here is the waf log if i try to connect to the website:

    reverseproxy: [Mon Aug 16 20:58:47 2010] [error] [client IP-Address] proxy: DNS lookup failure for: webserver-01 returned by / 
    2010:08:16-20:58:47 FW reverseproxy: srcip="SRCIP" localip="LocalIP" size="383" user="-" host="hostip" method="GET" statuscode="502" time="38502" url="/" server="mydomain" referer="-" cookie="-" set-cookie="-" 

    The dns show: 
    dns-resolver[4399]: Resolving REF_kLVvkrUway :: webserver-01
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  • 0 in reply to BAlfson
    Hi,

    here is the waf log if i try to connect to the website:

    reverseproxy: [Mon Aug 16 20:58:47 2010] [error] [client IP-Address] proxy: DNS lookup failure for: webserver-01 returned by / 
    2010:08:16-20:58:47 FW reverseproxy: srcip="SRCIP" localip="LocalIP" size="383" user="-" host="hostip" method="GET" statuscode="502" time="38502" url="/" server="mydomain" referer="-" cookie="-" set-cookie="-" 

    The dns show: 
    dns-resolver[4399]: Resolving REF_kLVvkrUway :: webserver-01
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