The film will describe how to configure Citrix Gateway (AG).
Before completing the Gateway configuration, complete the following tasks:
1.Netscaler need to add Licence.
2.Gateway will produce a FQDN, you need to create in DNS, and create a certificate.
First, you need to configure Netscaler Licence.
Netscaler of licence need to bind the mac address netscaler.
Create a certificate
Gateway will generate an FQDN, you need to create in DNS, and create a certificate. So certificate need to prepare in advance.
Certificate in this article still use the windows methods to apply.
I click on the server certificate on the IIS server.
Then visit the website http: // xxxx / certsrv where xxxx is part ca domain name server IP or 
choose to apply for a certificate 
to copy the contents of the txt file generated when the application for the certificate to apply for retention of the following figure, the web server certificate template selection . 
And then complete the certificate application 
and then export the certificate to pfx file.
Next, you need to configure a Gateway's FQDN, need to manually add A record in DNS. 
Remember just gw of pfx file? 
Next, the following figure shows the configuration is the storefront, url is filled storefront domain. And populated with the default domain name. 
(Troubleshooting, if you can not view the netscaler sf address, check the dns sf sf able to resolve domain name)
the STA url URL is http default ddc default, if you want to use https also need to bind the certificate on the ddc. The wording I'll make up late. 
Next is provided connected to the domain, fill in the information as shown above, and the connection test until the test passes.
This configuration, Netscaler partially completed configuration.
(Troubleshooting) 
When I was writing this article, it has been unable to complete the request. But with the case of IE visit I did not find the certificate have any questions. So rule out the certificate issue, and then look at the configuration, discovery ag wizard storefront step wrong, which asked to fill in the domain name, the domain name server became my fill, but the actual field itself as long as you can.