Configuring Application Access Controls
Application access controls, also known as management access controls, form a unified mechanism for managing user authentication and implementing rules that determine user access to applications and data. You can configure SNIPs to provide access for management applications. Management access for the NSIP is enabled by default and cannot be disabled. You can, however, control it by using ACLs.
For information about using ACLs, see Access Control Lists (ACLs).
The Citrix ADC appliance does not support management access to VIPs.
The following table provides a summary of the interaction between management access and specific service settings for Telnet.
|Management Access||Telnet (State Configured on the Citrix ADC)||Telnet (Effective State at the IP Level)|
The following table provides an overview of the IP addresses used as source IP addresses in outbound traffic.
|Server side traffic||No||Yes||No|
The following table provides an overview of the applications available on these IP addresses.
You can access and manage the Citrix ADC by using applications such as Telnet, SSH, GUI, and FTP.
Note: Telnet and FTP are disabled on the Citrix ADC for security reasons. To enable them, contact the customer support. After the applications are enabled, you can apply the controls at the IP level.
To configure the Citrix ADC to respond to these applications, you need to enable the specific management applications. If you disable management access for an IP address, existing connections that use the IP address are not terminated, but no new connections can be initiated.
Also, the non-management applications running on the underlying FreeBSD operating system are open to protocol attacks, and these applications do not take advantage of the Citrix ADC appliance’s attack prevention capabilities.
You can block access to these non-management applications on a SNIP or NSIP. When access is blocked, a user connecting to a Citrix ADC by using the SNIP or NSIP is not be able to access the non-management applications running on the underlying operating system.
To configure management access for an IP address by using the CLI:
At the command prompt, type:
set ns ip <IPAddress> -mgmtAccess <value> -telnet <value> -ftp <value> -gui <value> -ssh <value> -snmp <value> -restrictAccess (ENABLED | DISABLED)
> set ns ip 10.102.29.54 -mgmtAccess enabled -restrictAccess ENABLED Done
To enable management access for an IP address by using the GUI:
- Navigate to System > Network > IPs > IPV4s.
- Open an IP address entry, and select the Enable Management Access control to support the listed applications option.
Enable secure access to Citrix ADC GUI using a subnet IP address(SNIP)
Secure access to Citrix ADC GUI is enabled by default for the Citrix ADC IP (NSIP). You can also enable secure access to the Citrix ADC appliance by using a subnet IP address of the appliance.
After configuring an SNIP address for secure access to a high availability pair, the secure access is available to the primary appliance, if you access the SNIP address.
Citrix ADC CLI procedure
To enable secure access to Citrix ADC GUI using a subnet IP address(SNIP) by using the CLI:
At the command prompt, type:
set ns ip <SNIP_Address> -type SNIP -gui SECUREONLY -mgmtAccess ENABLED
> set ns ip 203.0.113.99 -mgmtAccess enabled -restrictAccess ENABLED Done