Getting Started with Citrix ADC
Deploy a Citrix ADC VPX instance
Install a Citrix ADC VPX instance on Microsoft Hyper-V servers
Install a Citrix ADC VPX instance on Linux-KVM platform
Prerequisites for Installing Citrix ADC VPX Virtual Appliances on Linux-KVM Platform
Provisioning the Citrix ADC Virtual Appliance by using OpenStack
Provisioning the Citrix ADC Virtual Appliance by using the Virtual Machine Manager
Configuring Citrix ADC Virtual Appliances to Use SR-IOV Network Interface
Configuring Citrix ADC Virtual Appliances to use PCI Passthrough Network Interface
Provisioning the Citrix ADC Virtual Appliance by using the virsh Program
Provisioning the Citrix ADC Virtual Appliance with SR-IOV, on OpenStack
Configuring a Citrix ADC VPX Instance on KVM to Use OVS DPDK-Based Host Interfaces
Deploy a Citrix ADC VPX instance on Microsoft Azure
Network architecture for Citrix ADC VPX instances on Microsoft Azure
Configure multiple IP addresses for a Citrix ADC VPX standalone instance
Configure a high-availability setup with multiple IP addresses and NICs
Configure a high-availability setup with multiple IP addresses and NICs by using PowerShell commands
Configure HA-INC nodes by using the Citrix high availability template with Azure ILB
Configure address pools (IIP) for a Citrix Gateway appliance
Upgrade and downgrade a Citrix ADC appliance
Authentication, authorization, and auditing application traffic
Configuring authentication, authorization, and auditing policies
Configuring Authentication, authorization, and auditing with commonly used protocols
Use an on-premises Citrix Gateway as the identity provider for Citrix Cloud
Troubleshoot authentication issues in Citrix ADC and Citrix Gateway with aaad.debug module
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Configure Citrix ADC as a non-validating security aware stub-resolver
Jumbo frames support for DNS to handle responses of large sizes
Caching of EDNS0 client subnet data when the Citrix ADC appliance is in proxy mode
Domain name system security extensions
Configure DNSSEC when the Citrix ADC is authoritative for a zone
Configure DNSSEC for a zone for which the Citrix ADC is a DNS proxy server
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Persistence and persistent connections
Advanced load balancing settings
Gradually stepping up the load on a new service with virtual server–level slow start
Protect applications on protected servers against traffic surges
Retrieve location details from user IP address using geolocation database
Use source IP address of the client when connecting to the server
Use client source IP address for backend communication in a v4-v6 load balancing configuration
Set a limit on number of requests per connection to the server
Configure automatic state transition based on percentage health of bound services
Use case 2: Configure rule based persistence based on a name-value pair in a TCP byte stream
Use case 3: Configure load balancing in direct server return mode
Use case 6: Configure load balancing in DSR mode for IPv6 networks by using the TOS field
Use case 7: Configure load balancing in DSR mode by using IP Over IP
Use case 10: Load balancing of intrusion detection system servers
Use case 11: Isolating network traffic using listen policies
Use case 12: Configure Citrix Virtual Desktops for load balancing
Use case 13: Configure Citrix Virtual Apps for load balancing
Use case 14: ShareFile wizard for load balancing Citrix ShareFile
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Authentication and authorization
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Configuring a CloudBridge Connector Tunnel between two Datacenters
Configuring CloudBridge Connector between Datacenter and AWS Cloud
Configuring a CloudBridge Connector Tunnel Between a Datacenter and Azure Cloud
Configuring CloudBridge Connector Tunnel between Datacenter and SoftLayer Enterprise Cloud
Configuring a CloudBridge Connector Tunnel Between a Citrix ADC Appliance and Cisco IOS Device
CloudBridge Connector Tunnel Diagnostics and Troubleshooting
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Configure DNSSEC for a zone for which the Citrix ADC is a DNS proxy server
The procedure for signing a zone for which the Citrix ADC is configured as a DNS proxy server depends on whether or not the ADC owns a subset of the zone information owned by the backend name servers. If it does, the configuration is considered apartial zone ownership configuration. If the ADC does not own a subset of the zone information, the Citrix ADC configuration for managing the backend servers is considered azone-less DNS proxy server configuration. The basic DNSSEC configuration tasks for both Citrix ADC configurations are the same. However, signing the partial zone on the Citrix ADC requires some additional configuration steps.
Note:The termszone-less proxy server configurationandpartial zoneare used only in the context of the Citrix ADC appliance.
Important:When configured in proxy mode, the ADC does not perform signature verification on DNSSEC responses before updating the cache.
If you configure the ADC as a DNS proxy to load balance DNSSEC aware resolvers (servers), you must set the Recursion Available option while configuring the DNS virtual server. If a DNSSEC query arrives with Checking Disabled (CD) bit set, the query is passed on to the server with the CD bit retained, and the response from the server is not cached. In releases prior to 10.5.e build xx.x, the ADC unset the CD bit before passing it to the server and also cached the server response.
Configure DNSSEC for a zone-less DNS proxy server configuration
For a zone-less DNS proxy server configuration, zone signing must be performed on the backend name servers. On the Citrix ADC, you configure the ADC as a DNS proxy server for the zone. You create a load balancing virtual server of protocol type DNS, configure services on the ADC to represent the name servers, and then bind the services to the load balancing virtual server. For more information about these configuration tasks, seeConfigure the NetScaler as a DNS proxy server.
When a client sends the ADC a DNS request with the DNSSEC OK (DO) bit set, the ADC checks its cache for the requested information. If the resource records are not available in its cache, the ADC forwards the request to one of the DNS name servers, and then relays the response from the name server to the client. Additionally, the ADC caches the RRSIG resource records along with the response from the name server. Subsequent requests from DNSSEC-aware clients are served from the cache (including the RRSIG resource records), subject to the time-to-live (TTL) parameter. If a client sends a DNS request without setting the DO bit, the ADC responds with only the requested resource records, and does not include the RRSIG resource records that are specific to DNSSEC.
Configure DNSSEC for a partial zone ownership configuration
In some Citrix ADC configurations, even though the authority for a zone lies with the backend name servers, a subset of the resource records that belong to the zone might be configured on the Citrix ADC. The ADC owns (or is authoritative for) only this subset of records. Such a subset of records can be considered to constitute apartial zoneon the ADC. The ADC owns the partial zone. All other records are owned by the backend name servers.
A typical partial zone configuration on the Citrix ADC is seen when global server load balancing (GSLB) domains are configured on the ADC, and the GSLB domains are a part of a zone for which the backend name servers are authoritative.
Signing a zone that includes only a partial zone on the ADC involves including the partial zone information in the backend name server zone files, signing the zone on the backend name servers, and then signing the partial zone on the ADC. The same key set must be used to sign the zone on the name servers and the partial zone on the ADC.
Sign the zone on the backend name servers
- Include the resource records that are contained in the partial zone, in the zone files of the name servers.
- Create keys and use the keys to sign the zone on the backend name servers.
Sign the partial zone on the Citrix ADC
Create a zone with the name of the zone that is owned by the backend name servers. When configuring the partial zone, set the proxyMode parameter to YES. This zone is the partial zone that contains the resource records owned by the ADC.
For example, if the name of the zone that is configured on the backend name servers is example.com, you must create a zone named example.com on the ADC, with the proxyMode parameter set to YES. For more information about adding a zone, seeConfigure a DNS zone.
Note
不添加SOA和NS记录区。这些records should not exist on the ADC for a zone for which the ADC is not authoritative.
- Import the keys (from one of the backend name servers) to the ADC and then add them to the /nsconfig/dns/ directory. For more information about how you can import a key and add it to the ADC, seePublish a DNS key in a zone.
- Sign the partial zone with the imported keys. When you sign the partial zone with the keys, the ADC generates RRSIG and NSEC records for the resource record sets and individual resource records in the partial zone, respectively. For more information about signing a zone, seesign and unsign a DNS zone.
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