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
年代olutions for Telecom Service Providers
Load Balance Control-Plane Traffic that is based on Diameter, SIP, and SMPP Protocols
Provide Subscriber Load Distribution Using GSLB Across Core-Networks of a Telecom Service Provider
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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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
年代et 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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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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Network architecture for Citrix ADC VPX instances on Microsoft Azure
In Azure Resource Manager (ARM), a Citrix ADC VPX virtual machine (VM) resides in a virtual network. A single network interface can be created in a given subnet of the Virtual Network and can be attached to the VPX instance. You can filter network traffic to and from a VPX instance in an Azure virtual network with a network security group. A network security group contains security rules that allow or deny inbound network traffic to or outbound network traffic from a VPX instance. For more information, see年代ecurity groups.
Network security group filters the requests to the Citrix ADC VPX instance, and the VPX instance sends them to the servers. The response from a server follows the same path in reverse. The Network security group can be configured to filter a single VPX VM, or, with subnets and virtual networks, can filter traffic in deployment of multiple VPX instances.
The NIC contains network configuration details such as the virtual network, subnets, internal IP address, and Public IP address.
While on ARM, it is good to know the following IP addresses that are used to access the VMs deployed with a single NIC and a single IP address:
- Public IP (PIP) address is the internet-facing IP address configured directly on the virtual NIC of the NetScaler VM. This allows you to directly access a VM from the external network.
- Citrix ADC IP (also known as NSIP) address is internal IP address configured on the VM. It is non-routable.
- 虚拟IP地址使用th (VIP)配置e NSIP and a port number. Clients access NetScaler services through the PIP address, and when the request reaches the NIC of the NetScaler VPX VM or the Azure load balancer, the VIP gets translated to internal IP (NSIP) and internal port number.
- Internal IP address is the private internal IP address of the VM from the virtual network’s address space pool. This IP address cannot be reached from the external network. This IP address is by default dynamic unless you set it to static. Traffic from the internet is routed to this address according to the rules created on the NSG. The NSG works with the NIC to selectively send the right type of traffic to the right port on the NIC, which depends on the services configured on the VM.
下面的图显示了如何从交通流量a client to a server through a NetScaler VPX instance provisioned in ARM.
Traffic flow through network address translation
You can also request a public IP (PIP) address for your Citrix ADC VPX instance (instance level). If you use this direct PIP at the VM level, you need not define inbound and outbound rules to intercept the network traffic. The incoming request from the Internet is received on the VM directly. Azure performs network address translation (NAT) and forwards the traffic to the internal IP address of the VPX instance.
The following figure shows how Azure performs network address translation to map the NetScaler internal IP address.
In this example, the Public IP assigned to the NSG is 140.x.x.x and the internal IP address is 10.x.x.x. When the inbound and outbound rules are defined, public HTTP port 80 is defined as the port on which the client requests are received, and a corresponding private port, 10080, is defined as the port on which the Citrix ADC VPX instance listens. The client request is received on the Public IP address (140.x.x.x). Azure performs network address translation to map the PIP to the internal IP address 10.x.x.x on port 10080, and forwards the client request.
Note
Citrix ADC VPX VMs in high availability are controlled by external or internal load balancers that have inbound rules defined on them to control the load balancing traffic. The external traffic is first intercepted by these load balancers and the traffic is diverted according to the load balancing rules configured, which has back-end pools, NAT rules, and health probes defined on the load balancers.
Port usage guidelines
You can configure more inbound and outbound rules n NSG while creating the Citrix ADC VPX instance or after the virtual machine is provisioned. Each inbound and outbound rule is associated with a public port and a private port.
Before configuring NSG rules, note the following guidelines regarding the port numbers you can use:
The Citrix ADC VPX instance reserves the following ports. You cannot define these as private ports when using the Public IP address for requests from the internet. Ports 21, 22, 80, 443, 8080, 67, 161, 179, 500, 520, 3003, 3008, 3009, 3010, 3011, 4001, 5061, 9000, 7000. However, if you want internet-facing services such as the VIP to use a standard port (for example, port 443) you have to create port mapping by using the NSG. The standard port is then mapped to a different port that is configured on the NetScaler for this VIP service. For example, a VIP service might be running on port 8443 on the VPX instance but be mapped to public port 443. So, when the user accesses port 443 through the Public IP, the request is directed to private port 8443.
Public IP address does not support protocols in which port mapping is opened dynamically, such as passive FTP or ALG.
High availability does not work for traffic that uses a public IP address (PIP) associated with a VPX instance, instead of a PIP configured on the Azure load balancer.
Note
In Azure Resource Manager, a Citrix ADC VPX instance is associated with two IP addresses - a public IP address (PIP) and an internal IP address. While the external traffic connects to the PIP, the internal IP address or the NSIP is non-routable. To configure VIP in VPX, use the internal IP address and any of the free ports available. Do not use the PIP to configure VIP.
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