Hey All, thank you for the help thus far. I really appreciate it!
I am able to connect to the RDP server via RD Gateway using a Microsoft Client. The successful logs look as follows:
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2014:06:10-06:51:12 utm reverseproxy: [Tue Jun 10 06:51:12.350196 2014] [url_hardening:error] [pid 10353:tid 3979213680] [client 14.14.14.14:49519] No signature found, URI: tech.wan.com.au/.../
2014:06:10-06:51:12 utm reverseproxy: srcip="14.14.14.14" localip="11.11.11.11" size="284" user="-" host="14.14.14.14" method="RDG_OUT_DATA" statuscode="403" reason="url hardening" extra="No signature found" exceptions="-" time="342736" url="/remoteDesktopGateway/" server="tech.wan.com.au" referer="-" cookie="-" set-cookie="-"
2014:06:10-06:51:13 utm reverseproxy: srcip="14.14.14.14" localip="11.11.11.11" size="13" user="-" host="14.14.14.14" method="RPC_IN_DATA" statuscode="401" reason="-" extra="-" exceptions="SkipURLHardening" time="744980" url="/rpc/rpcproxy.dll" server="tech.wan.com.au" referer="-" cookie="-" set-cookie="-"
2014:06:10-06:51:13 utm reverseproxy: srcip="14.14.14.14" localip="11.11.11.11" size="13" user="-" host="14.14.14.14" method="RPC_OUT_DATA" statuscode="401" reason="-" extra="-" exceptions="SkipURLHardening" time="197524" url="/rpc/rpcproxy.dll" server="tech.wan.com.au" referer="-" cookie="-" set-cookie="-"
However I am unable to connect via the Microsoft RDP app on any other platform. The error log is as follows:
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2014:06:10-06:50:09 utm reverseproxy: [Tue Jun 10 06:50:09.655723 2014] [url_hardening:error] [pid 10353:tid 3995999088] [client 14.14.14.14:52726] URI prefix does not match, URI: tech.wan.com.au:443/.../rpcproxy.dll
2014:06:10-06:50:09 utm reverseproxy: [Tue Jun 10 06:50:09.655746 2014] [url_hardening:error] [pid 10353:tid 3987606384] [client 14.14.14.14:52727] URI prefix does not match, URI: tech.wan.com.au:443/.../rpcproxy.dll
2014:06:10-06:50:09 utm reverseproxy: srcip="14.14.14.14" localip="11.11.11.11" size="286" user="-" host="14.14.14.14" method="RPC_IN_DATA" statuscode="403" reason="url hardening" extra="URI prefix does not match" exceptions="-" time="3054527" url="/rpc/rpcproxy.dll" server="tech.wan.com.au" referer="-" cookie="-" set-cookie="-"
2014:06:10-06:50:09 utm reverseproxy: srcip="14.14.14.14" localip="11.11.11.11" size="286" user="-" host="14.14.14.14" method="RPC_OUT_DATA" statuscode="403" reason="url hardening" extra="URI prefix does not match" exceptions="-" time="3049346" url="/rpc/rpcproxy.dll" server="tech.wan.com.au" referer="-" cookie="-" set-cookie="-"
The things I have tried are as follows:
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1. Connecting directly to the server via the app and bypass the utm = working! (So issue is definitely the firewall and not the server or iis publishing...etc).
2. Adding the full uri to the url hardening list:
"tech.wan.com.au:443/.../rpcproxy.dll.
3. Adding the partial uri to the url hardening list:
"/rpc/rpcproxy.dll?localhost:3388" - I still get the same error
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