Table of Contents



Overview


The Edge Server provides users with the same external characteristics and internal experience that Lync Server 2013.. 
With the publication of the Edge Server, the following features are supported:
  • Connecting remote clients;
  • Federation with messenger; 
  • Integration with Public IM's;
To run the setup, the service requires a server with two network cards, each one connected to a different network segment.. The Edge Server supports the use of the NAT only on the NIC, that is routed to the Internet and also to the network card that initiates communication with the internal network NAT is not supported.  To run the setup, the Edge have a DMZ divided into two networks . The IP address of the servers and networks are described in the figure and table below: 
 


Corporate networks servers are running Windows Server 2012. All servers are part of the same Active Directory Domain Services with the internal FQDN home.intranet, there is a pool of the Lync Server Standard with the domain name: sip home.com.br. 

Server Name IP Role
Hm01.home.intranet 172.16.1.245/24 Domain Controller and Enterprise Certification
Hm02.home.intranet 172.16.1.246/24 Lync Server Standard
Hm11.home.intranet 172.16.1.251/24 Office Web Apps Server


I have three firewalls settings to networks segments bellow:
Firewall Names 1st Ip Address IP Address 2 Description 
FW-Internal 172.16.1.210/24 192.168.0.210/24 Firewall separating the DMZ Network Corporate Network 1.There is a relationship between the two routing networks. 
FW-DMZ 192.168.0.250/24 10.0.0.250 Network Firewall DMZ that separates the DMZ Network 1 and 2. There is a relationship between routing network. 
FW-External 10.0.0.254 xxx.x.178.155 
xxx.x.178.156 
xxx.x.178.157
 Firewall separating the DMZ Network and Internet 2. There is a relationship between the two NAT network and all IPs address valid structure are configured on this device. 



In the DMZ, I have two servers configured with two network cards, each network adapter connected to a different network DMZ. These servers are part of the Workgroup home.dmz. Only the ports required for the publication of the services are configured on the internal and external firewalls. 

Server Name Ip Network Address DMZ 1 IP Network DMZ 2 Description 
HmRP
 192.168.0.150/24 10.0.0.150/24 IIS Reverse Proxy
HmEdge 192.168.0.120/24 10.0.0.120/24 
10.0.0.121 
10.0.0.122		 Lync Edge Server


Configuring the DNS Service

Internal DNS

I have two zones settings in the domain controller HM01. The zone home.intranet integrated with Active Directory supporting dynamic updates. and it was manually created a record that resolves the FQDN of the Edge Server in the DMZ.




The second zone called home.com.br, are not support dynamically updates from the records that were created at the zone by the the pool Lync and Exchange.
   

The following records were set in the area:

Type of Record FQDN IP Description 
A sip.home.com.br 172.16.1.246 Address internal Front End  or Director for internal network clients 
A admin.home.com.br 172.16.1.246 URL Administration pool
A DialIn.home.com.br 172.16.1.246

 URL Access to Dial In 
A meet.home.com.br 172.16.1.246  URL of Web services meeting
A lyncdiscoverinternal.home.com.br  172.16.1.246 Register for Lync AutoDiscover service to internal users
A lyncdiscover.home.com.br 172.16.1.246 Register for Lync AutoDiscover service to external users  
SRV Service: _sipinternaltls 
Protocol: _tcp 
Port: 5061		 sip.home.com.br Record pointer services to internal customer connections using TLS 


External DNS

At DNS zone home.com.br internet records were created:
Type of Record FQDN IP Description 
A sip.home.com.br xxx.x.178.155 Address external  Edge Server  for connecting external customers
A WebConf.home.com.br xxx.x.178.156 URL Access to Web Services Edge Server
A AV.home.com.br xxx.x.178.157
 URL services Audio and Video
SRV _sip._tls.home.com.br
 sip.home.com.br: 443 Record scorer services for external connections using TLS clients. This connection should be pointed on port 443. 


Configuring the Firewall


Ports Requirement for Internal Access


The following ports must be allowed access between the Edge Server internal network , Lync pool servers and internal network clients:

Protocol / Port Source Destination Description 
Sip/TCP/5061 Ip Address of the Front End Server or  Director Server  IP address of the network card's internal  Edge Server  SIP outbound traffic from Front Endor Director Server to the network card's internal Edge Server
Sip/TCP/5061 IP address of the network card intena the  Edge Server 
 Ip Address of the  Front End Server or  Director Server
 Traffic inbound SIP network card's internal Edge Server to the address of the Front End or Director 
PSOM/TCP/8057
 Ip Address of the  Front End Server or  Director Server
 IP address of the network card's internal  Edge Server 
 Traffic Conference Web Front End Server to the internal network card of the Edge Server
Sip/TCP/5062
 Ip Address of the  Front End Server or  Director Server
 IP address of the network card's internal  Edge Server 
 Authentication of users of Audio / Video  Front End Server  for  Edge Server
STUN/UDP/3478  All ip's Corporate Network  IP address of the network card's internal  Edge Server   Traffic Media Audio / Video between internal and external users
STUN/TCP/443  All ip's Corporate Network  IP address of the network card's internal  Edge Server    Traffic Restraint Media Audio / Video between internal and external users. If the connection to the UPD protocol fails, the 443/TCP port will be used for media traffic.
Https/TCP/4443 Ip Address of the  Front End or Back End Server  IP address of the network card's internal  Edge Server     Replication traffic from the internal pool settings for the Local Configuration Store the Edge Server
MTLS/TCP/50001  All ip's Corporate Network   IP address of the network card's internal  Edge Server    Controller Centralized Logging Service using the Lync Server Management Shell cmdlets and Centralized Logging Service, ClsController (ClsController.exe) or commands and agent logs (ClsAgent.exe) 
MTLS/TCP/50002 All ip's Corporate Network   IP address of the network card's internal  Edge Server    Controller Centralized Logging Service using the Lync Server Management Shell cmdlets and Centralized Logging Service, ClsController (ClsController.exe) or commands and agent logs (ClsAgent.exe) 
MTLS/TCP/50003 All ip's Corporate Network   IP address of the network card's internal  Edge Server    Controller Centralized Logging Service using the Lync Server Management Shell cmdlets and Centralized Logging Service, ClsController (ClsController.exe) or commands and agent logs (ClsAgent.exe) 



Ports Requirement for External Access


To publish Lync and services necessary to create the following rules on the firewall of internet:

Protocol Source Destination Description 
Sip/TCP/443
 Any Internet address Ip public service for the SIP  Edge Server SIP traffic between client-server for external users
Sip/TCP/5061
 Any Internet address
 Ip public service for the SIP  Edge Server
Sip/TCP/5061
 Ip public service for the SIP  Edge Server
 Any Internet address
PSOM/TCP/443
 Any Internet address
 Web Conferencing Service  Edge Server Media Web conferencing
STUN/UDP/3478 Ip public service for the A / V  Edge Server  Any Internet address  Traffic used by the client to determine the version of the Edge Server. 
STUN/UDP/3478 Any Internet address  Ip public service for the A / V  Edge Server   Traffic trading connection over UTP
STUN/TCP/443 Any Internet address   Ip public service for the A / V  Edge Server    Traffic trading connection on TCP/443
STUN/TCP/443 Ip public service for the A / V  Edge Server    Any Internet address    Traffic trading connection on TCP/443



Configuring Access Policies


By default when the pool is created, the Lync external access policy called Global is created with all access disabled. To allow external access to Lync clients need to change the default policy or create a new policy for users. 
Changing the policy Global allows all users to have the ability to connect external. Visit the Lync Server Control Panel tab to access the Federation and External Access access policies on the Edge Access Edge Configuration. politics Select Global.


Select the options Enable remote user access and Enable anonymous user access to conferences


Check that the policy was changed successfully.


Return to the Lync Server Console click in External Access Policy and change the Global policy


Check the option Enable communication with remote users and apply the changes 

Creating the Edge Server Pool


All steps of creating and configuring the Edge Server pool are performed using the Topology Builder. Begin the configuration tool and select Download Topology from existing deployment.

 


Select settings Edge Pools right click and create a pool in New Edge Pool ....


Go to start creating the pool


Click Single computer pool and add the name internal FQDN  reserved for the Edge server, this environment HmEdge.home.intranet


At this time I will not configure any feature integration with other IM services, leave all the boxes unchecked and go.


In this environment I have only IPv4 addresses for both internal and external interfaces, therefore only leave these boxes configured address. The external network adapter of the Edge Server connected to this network that the firewall is configured as NAT Network DMZ 2, so I marked the last dialog box The external IP address of this Edge pool is translated by NAT.


Then configure the names for the external FQDN's access services Edge Pool. As availability will have three services set for publication in the secure port 443 and publish each with a different Ip valid internet. 


Configure which IP address of the network card that communicates with the Pool on the corporate network. In this scenario configured with the IP 192.168.0.120


Configure which ips configured on the network adapter external Edge Server associating a private Ip with each service.


Configure Ip public service that will be configured for Audio and Video pool. 


Configure which the pool Front End Edge will be involved.


Configure which servers Front End will be used by Edge, and finalize the pool creation.


Return to Builer Topology and publish settings.


Go ahead and start the writing process on the basis 


The process should finish without errors.


With the Edge Server pool created and published on the Central Management Store we have to export the settings to a file pool that will be used in the Edge server installation. Start the Lync Server Management Shell and run the cmdlet:

Export-CsConfiguration <folder path>


Access the Web service server certificate and export the root certificate into the same folder.




Copei entire contents of this folder to the server Edge Server.

Server Configuration Edge Server


The Edge Server server has two network cards each connected to a different network DMZ. A plate of Network DMZ one that is treated as a network card inside the server, and other network card connected Network DMZ 2 that is treated as the external network adapter on the server.


The NIC Network DMZ 1 was configured with the ip 192.168.0.120. This plate was configured without a default gateway address.


The NIC Network DMZ 2 was configured with three private ip's. Each ip is configured with an Access Service Edge. The three ip's are 10.0.0.120/24, and 10.0.0.121/24 10.0.0.122/24. This plate was configured with the default gateway pointing to the external firewall. 


The Edge server should be able to route packets from clients for Lync Front End pool. To this you must add a route to the server in Corporate Network on IP address range 172.16.1.0/24. 


To enable communication with the Edge Server Front End must add an exit route for the 172.16.1.0/24 network originated in inner plate Edge Server. To identify which interface is used to add the route first run ipconfig / all


Identify the route print how many physical interface. In this scenario the internal network card is labeled IF 12


Run the command route add with the option -p  to set the route as persistent. For that is not erased when the server restarts.

route add <rede address> mask <mascara of identificação> <IP gateway> if <identificação board <Network-p


After configuring the DNS suffix add routes to Edge server. Tab to change the computer name click Change, in Full computer name click More and add Primary DNS suffix of this computer: the suffix of the Active Directory Domain Services.


The Edge Server must be able to resolve the FQDN name of the Front End, to this add the name and ip of the Front End in the host file. Navigate to the folder C: \ windows \ System32 \ drivers \ etc \ hosts. 


To test the routing fireall release the ping and ping internal to the corporate network.


To finalize the operating system configuration, import the root certificate HM01 folder of Trusted Root Certification


Installation Services Edge Server


Supported are the following operating systems to install the Edge Server
  • Windows Server 2008 R2 Enterprise Edition SP1 or Windows Server 2008 R2 Standard Edition SP1
  • Windows Server 2012 Standard or Datacenter
The installation of services also requires inclusion of the following server features:
In Windows Server 2012 features are implemented by the Server Manager
  • Windows Identity Foundation run the cmdlet
add-WindowsFeature Windows-Identity-Foundation

  • . NET Framework 4.5, 
add-WindowsFeature Net-Framework-45-core



Creating the Local Configuration Store


To begin installing the Local Configuration Store lot of media  Lync Server  and double-click to start the wizard


Set the installation folder of files and click Install


Accept the license terms and click OK



Click Install or Update Lync Server System


Run the first step Install Local Configuration Store


In the Import from file (recommended for Edge Servers) click Browse .. and select the file generated by the cmdlet  Export-CsConfiguration in Front End


Finalize the installation of Configuration Store and return to the setup wizard


Installation and Service Components


Run the second step Setup or Remove Lync Server Components


Go to start copy the file and services


Finish the installation wizard and return to the Lync Server


Creation of Digital Certificates


All traffic Edge Server Front-End and Edge Server, Lync Client is encrypted using digital certificates. Each network card requires a digital certificate with the names FQDN's configured for remote connection services.

Board Certified Internal Network


To configure the certificate for the internal network card of the Edge Server run the third step Request, Install or Assign Certificates.


Select the Internal Edge and click Request.


Proceed to start the certificate request.


How the Edge Server does not have access to the server digital certificate will generate a file with the settings and import the certificate to the server's internal network.Select Prepare the Request now, but send it later (offile certificate request)


Select the file path and go 


No need to change the certificate templates.


Configure the Friendly Name  of the digital certificate, this field does not affect any practical configuration of the certificate try the function only identification certificate.  


Configure the organization's information


Configure the geographic information


In Subject Name configure the internal FQDN created for the Edge Server and advance


No need to add any records in the SAM internal certificate


In Summary Request make sure all information is correct and proceed.


The command to generate the certificate should be executed and the file created in the folder configured


Finalize the assistant certificate, then you need to create a request for external certificates



Board Certified External Network


The application process for the external certificate is identical to the internal process, I will show only the differences between the processes. 
installation wizard Return to Lync Server, select External Edge Certificate  and click Requet.


Set the folder where you saved the file request


Configure the Friendly Name for the external certificate


Domain names sip supported by the Front End are now automatically added to the certificate 


Select the SIP domain that will be supported for remote connections. Go ahead and finalize the request for the certificate.


Installation of Digital Certificates


Copy the certificate to the internal network and make the generation of the digital certificate in the certification. Copy the certificates to the final server Edge Server 


Start the MMC console, connect to the local computer. Click Personal -> Import browse to the certificate and import the two files generated. 


Both certificates must be installed on the computed form below


Configuring Certificates in the Services


With the certificate installed on the server you must associate them services and network card. Return to the installation wizard Lync Server and rerun the third step Request, Install or Assign Certificates


Select Edge Internal and click Assign.


Go on Assignment Certificate.


Select the certificate generated for the internal card's Edge, and click Next


Ensure that all information is correct and proceed to start the configuration.



The wizard must configure the certificate for the internal network card's Edge. Finish the wizard.


Return to assistant certificate configuration, select External Edge Certificate and click Assign


Proceed to start the configuration process


Select the certificate generated for the services of the external network adapter and go


Ensure that all information is correct and proceed to start the configuration.


The wizard must configure the certificate for the external network adapter of the Edge. Finish the wizard.


The configuration console should show the two certificates installed and configured services.


Close the assistant certificate and return to the main screen installation.

Starting the Services


In the installation wizard Lync Server run the fourth step, Start Services.


This process must start all services Lync Server Edge.

 


To verify that the services are running open the service console and check the status changed to running


Testing the Access


With the services started, the Front End Server initiates the replication settings for the Local Store on Edge Server. replication After first external users should be able to initiate connection to the Edge Server.  Microsoft provides a portal  https:/ / www.testocsconnectivity.com to perform connection tests and doors in the structure. 





Provide the information of a user enabled for remote connection and check the server status


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This article was originally written by: 
Fernando Lugão Veltem 
blog:  http://flugaoveltem.blogspot.com  
twitter:  @ flugaoveltem