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Citrix NetScaler Release 9.3 Build 51.5

Enhancements  in NetScaler 9.3 Build 51.5

Application Firewall

The new Signature Editor allows users to customize signature rules and add their own signature rules to a signatures object, to meet the specific security
needs of their protected web sites and web services. Signature patterns, which define how a particular type of attack is detected, can be based on literal
strings, PCRE-format regular expressions, or the built-in SQL injection or cross-site scripting patterns. You can assign them to the default signature
categories, or create your own categories for ease of management.  For more information on how to create and modify local signature rules, see the
online help.

Configuration Utility

In the configuration utility, in the ‘View Connections’ dialog box of the ‘Diagnostics’ page, the ‘Client-server’ check box has been renamed to
‘Client-Server Link Mapping’. When you select this check box, the dialo box displays all the linked client server mappings.

Load Balancing Virtual Server Entity Template

Now, when you export a load balancing entity template, a deployment file is created along with the entity template file. Both files are created in XML
format. The template file contains configuration-specific information and the deployment file contains deployment-specific information.
When you import the template file, you can either specify the deployment file or you can manually enter the deployment information. If you specify the
deployment file, the NetScaler appliance uses the deployment information in the deployment file.

NetScaler MPX 9700/10500/12500/15500 10G FIPS Appliances

SSL transactions per second (TPS) performance on the NetScaler MPX 9700/10500/12500/15500 10G FIPS appliances has significantly improved for
1024-bit and 2048-bit keys.

NetScaler MPX 11500/13500/14500/16500/18500 and SDX 11500/13500/14500/16500/18500 appliances (nCore only)

You can now convert a Citrix NetScaler MPX 11500/13500/14500/16500/18500 appliance to a Citrix NetScaler SDX appliance.

For more information on this migration, see

For more information about configuring a Citrix NetScaler MPX 11500/13500/14500/16500/18500 appliance, see

For more information about configuring a Citrix NetScaler SDX 11500/13500/14500/16500/18500 appliance, see

NetScaler Cloud Bridge

Now the NetScaler Platinum Edition license includes support for the Cloud Bridge feature.

NetScaler License

A new license has been introduced that includes support for the following
• Cloud Bridge
• All features available in the Standard Edition license except Access Gateway.

NetScaler SDX Appliance

The following table shows the maximum throughput available on the Citrix NetScaler SDX 11500/13500/14500/16500/18500 appliances.
Platform                        Maximum throughput (in Mbps)
SDX 11500                           8000
SDX 13500                          12000
SDX 14500                          16000
SDX 16500                          20000
SDX 18500                          30000


The following new counters and SNMP OIDs measure the utilization of the Cavium
chip in SSL processing:
* Per device queue size
** BCM card:
bcm_cur_q_size: bcm(<card-id>)
**Old FIPS card
fips_cur_q_size: fips(<card-id>)
** NGFIPS card
fipsN2_cur_q_size: fipsN2(<card-id>)
** Cavium accel card
cvm_cur_q_size: cavium(<card-d>)
* Global q size
** counter: ssl_cur_q_size
** SNMP name: sslCurQSize

System (nCore, nCore VPX)

Support for the uniq tool, which is used to print the unique lines in a sorted file, has been included. The uniq tool is available in the shell interface.


Now you can set the cache memory size of a NetScaler VPX instance up to 8 GB.

To set the cache memory size of a VPX instance
1. Set the memory to the VPX instance. The minimum memory required for this instance for the basic functionality is 2 GB. To use large cache feature, you
have to increase the memory, for example, 14G [8G for Cache + 6G for PE and BSD]

2. On the VPX instance, add and apply the VPX-3000 license by either using the NS CLI or the configuration utility. This license allows you to set large cache
size (8 GB.)

3. Set the cache memory to the VPX instance by either using the NS CLI or the configuration utility.

4. Add a virtual disk to the VPX instance and set the size equal to 2.25 * VPX instance memory. For example, 32G [2.25*14].

5. Reboot the VPX instance.


Download NetScaler Release 9.3 Build 51.5 here

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