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i can ping the external ip address via the TMG but when i try ping the name i get cannot find host. but when i tracert the external ip address i get the following error on the firewall.... 
 
Denied Connection RX-TMG01-S 2011/10/17 03:08:13 PM 
Log type: Firewall service 
Status: A packet generated on the local host was rejected because its source IP address is assigned to one network adapter and its destination IP address is reachable through another network adapter. &nbsp; 
Rule: None - see Result Code 
Source: Local Host (10.1.1.100:137) 
Destination: External (***.***.***.***:137) 
Protocol: NetBios Name Service 
&nbsp;Additional information 
Number of bytes sent: 0 Number of bytes received: 0 
Processing time: 0ms Original Client IP: 10.1.1.100 
 
 
Denied Connection RX-TMG01-S 2011/10/17 04:15:51 PM 
Log type: Firewall service 
Status: Access is denied. &nbsp; 
Rule: Default rule 
Source: Internal (10.1.1.2:137) 
Destination: External (***.***.***.***:137) 
Protocol: NetBios Name Service 
&nbsp;Additional information 
Number of bytes sent: 0 Number of bytes received: 0 
Processing time: 0ms Original Client IP: 10.1.1.2 
&nbsp; 

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i can ping the external ip address via the TMG but when i try ping the name i get cannot find host. but when i tracert the external ip address i get the following error on the firewall....

Denied Connection RX-TMG01-S 2011/10/17 03:08:13 PM 
Log type: Firewall service 
Status: A packet generated on the local host was rejected because its source IP address is assigned to one network adapter and its destination IP address is reachable through another network adapter.  
Rule: None - see Result Code 
Source: Local Host (10.1.1.100:137) 
Destination: External (***.***.***.***:137) 
Protocol: NetBios Name Service 
 Additional information 
Number of bytes sent: 0 Number of bytes received: 0
Processing time: 0ms Original Client IP: 10.1.1.100 


Denied Connection RX-TMG01-S 2011/10/17 04:15:51 PM 
Log type: Firewall service 
Status: Access is denied.  
Rule: Default rule 
Source: Internal (10.1.1.2:137) 
Destination: External (***.***.***.***:137) 
Protocol: NetBios Name Service 
 Additional information 
Number of bytes sent: 0 Number of bytes received: 0
Processing time: 0ms Original Client IP: 10.1.1.2
 


DNS failure... - forefront threat management gateway

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.

Internet Protocols

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.