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This section enlists the available One Identity Safeguard for Privileged Sessions (SPS) deployment scenarios in a Citrix environment. The text on the arrows are formatted in (<step number>) <target port> format. The target ports define the protocols used in the communication:
80: Web service, HTTP: the list of available resources fetched in an XML format from the broker (v12 and v11 with Citrix Virtual Apps (formerly known as Citrix XenApp) only). The broker sends all the necessary information, including secure gateway and server addresses to the client.
8080: XML service, HTTP+XML: application discovery, load balancing (v12 and v11 with Citrix Virtual Apps (formerly known as Citrix XenApp) only), used to fetch target to the application/desktop by the client from the broker (used for load balancing, and so on).
443: XML service access or SOCKS/ICA or CGP/ICA wrapped in TLS. The client communicates with the secure gateway on this port for everything.
1080: SOCKS. The client can be configured to access the target server and the broker using a SOCKS proxy.
1494: Plain ICA.
2598: CGP/ICA (reliable mode enabled).
Accessing Citrix Virtual Desktops (formerly known as Citrix XenDesktop) is supported only in the following scenarios. Only reliable connections (CGP) are supported.
The SPS is deployed between the client and the server and the clients use predefined connection files or Program Neighbourhood, without a broker or secure gateway. The clients try to connect to their original ICA/CGP server.
Figure 181: Client - SPS - Server (Transparent mode)
The SPS is deployed between the client and the server and the clients use predefined connection files or Program Neighbourhood, without a broker or secure gateway. The clients try to connect to SPS, which can distinguish between the potential targets for example by source IP, or by having multiple IP addresses itself.
Figure 182: Client - SPS - Server (Non-transparent mode)
The clients are using a farm broker which gives them a list of the available applications and servers, but they do not use a secure gateway in the network. The SPS is placed between the clients and the servers in transparent mode, and it catches the connections when the clients try to connect to the server IP addresses they got from the broker.
Figure 183: Client - Broker - SPS - Server (Transparent mode)
In this setup, a secure gateway is used in the network and the SPS is placed between this gateway and the servers in transparent mode. The clients connect to the broker for the list of available applications/servers and then make their further connections through the original secure gateway. That gateway forwards the connections either to the broker or to the CGP/ICA servers, which latter the SPS intercepts and audits/controls.
Figure 184: Client - Broker - original secure gateway - Secure Ticket Authority (STA) - SPS - Server
In this setup, the SPS acts as a SOCKS proxy for the client. It can be set either manually or specified by the broker. The client then makes all its connections to the broker or to the server using SPS as a proxy and hence it can audit/control these connections.
Figure 185: Client - Broker - SPS as socks proxy - Server
To configure such a scenario, you must set the ICA Connection Policy as follows:
Enter the IP address of SPS into the To field. This must be the public IP address that the clients will target.
Select Inband destination selection, and list the IP addresses or networks of target servers in the Targets field. (For details, see Configuring inband destination selection.)
Select Act as a SOCKS proxy.
Add the IP addresses of your brokers to the Brokers field.
Accessing Citrix servers using the Remote Desktop Protocol may fail in certain situations, and the connection is terminated with the ERROR: error while decompressing packet error message on the client, or with the Event56, TermDD, The Terminal Server security layer detected an error in the protocol stream and has disconnected the client. message on the server.
To overcome this problem, modify the settings of the network card of the server, and disable the Large Send Offload option.
The problem is not related to using One Identity Safeguard for Privileged Sessions (SPS) in your environment.
The following sections describe configuration settings available only for the MSSQL protocol. Use the following policies to control who, when, and how can access the MSSQL connection. For a list of supported client applications, see Supported protocols and client applications.
Channel Policy: The MSSQL protocol has only one channel type with no special configuration options. The available channel policy options are the following: Type, From, Target, Time policy, Four-eyes, Record audit trail, Gateway groups, Remote groups, and Content policy. For details on configuring these options, see Creating and editing channel policies.
TLS support: To enable TLS-encryption for your MSSQL connections, see Enabling TLS-encryption for MSSQL connections.
Authentication Policy: Authentication policies describe the authentication methods allowed in a connection. Different methods can be used for the client and server-side connections. For details, see Creating a new MSSQL authentication policy.
MSSQL settings: MSSQL settings determine the parameters of the connection on the protocol level, including timeout value, and so on. For details, see Creating and editing protocol-level MSSQL settings.
User lists in Channel Policies: User lists affect MSSQL connections only when they are used together with Gateway Authentication. For details, see Configuring gateway authentication.
Content Policy: Content policies allow you to inspect the content of the connections for various text patterns, and perform an action if the pattern is found. For example, One Identity Safeguard for Privileged Sessions (SPS) can send an e-mail alert if a specific command is used in a MSSQL terminal session. For details, see Creating a new content policy.
Authentication and Authorization plugin:
One Identity Safeguard for Privileged Sessions (SPS) provides a plugin framework to integrate SPS to external systems to authenticate or authorize the user before authenticating on the target server. Such plugins can also be used to request additional information from the users, for example, to perform multi-factor authentication.
For details, see Integrating external authentication and authorization systems.
Creating and editing protocol-level MSSQL settings
This section focuses on describing the MSSQL-specific details of connection configuration. For a detailed description on configuring connections, see General connection settings.