CVE-2017-17549 - Information Disclosure in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway Client TLS Handshake

Description of Problem A vulnerability has been identified in the Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway Packet Engine that could result in the disclosure of cleartext traffic from the backend client TLS handshake. This vulnerability only affects connections...

SSL Handshake Fails When Server Name Indication (SNI) is Enabled on ADC

SSL handshake fails when Server Name Indication feature is enabled on NetScaler Server Name Indication aka SNI is an extension of the TLS protocol. For SNI to work, the server name in the client hello must match the host name configured on the back-end service that is bound to an SSL virtual...

EDT Security using DTLS

EDT Security using DTLS As from XenApp and XenDesktop 7.16 VDAs, DTLS is supported refer to the Windows OS VDA 7.16 Schannel library support for DTLS article. This means that backend connection between NetScaler and the VDA could optionally use DTLS. In addition, Receiver could optionally use DTL...

Predefined Setting Values Configured on NetScaler MAS

This article list the predefined setting values configured on NetScaler MAS. NetScaler MAS Prune settings Number of days to keep data is default 15 Pruning happens everyday at 00:00 for Events, Audit Log, Task Log tables NetScaler MAS Backup Settings Every 12 hours NetScaler MAS will back up...

Error "Packets dropped due to licensed throughput rate being reached" on NetScaler

The following error is recorded in the ns.log file on NetScaler: EVENT Message 62992 0 : "410 packets dropped due to licensed throughput rate being reached"...

How to log on using the Command Line Interface on NetScaler SD-WAN WANOP

This article describes accessing NetScaler SD-WAN WANOP appliance using command-line interface CLI...

How to Upgrade NetScaler SD-WAN WANOP Appliance from 7.x to 9.3.x Version

This article provide steps to upgrade NetScaler SD-WAN WANOP appliance from 7.x to 9.3.x version...

NetScaler VPX on 11.1 Firmware Shows as VPX (1) in GUI when Using MAS Pooled Capacity Licensing

NetScaler GUI showing "NetscalerRemoteLicensedVirtualAppliance”. However, VPX instance is showing “License type” as Enterprise on GUI but the model ID was 1 i.e, VPX1...

How to Run Packet Capture on NetScaler SD-WAN WANOP

This article describes how to run packet capture on NetScaler SD-WAN WANOP...

The vulnerability of the micro-programming software of the access control system for the virtual environment NetScaler Gateway, as well as the micro-programming software of the application delivery controller Citrix NetScaler Application Delivery Controller, allows a intruder to gain access to the NetScaler management interface.

The vulnerability of the microprogramming software of the access control system for the virtual environment NetScaler Gateway and the microprogramming software of the application delivery controller Citrix NetScaler Application Delivery Controller is related to deficiencies in access control...

Testing HA Failover on NetScaler SD-WAN

Site level HA works in a way independent to the virtual path state of the site with other sites. Meaning if the physical links are down while one appliance is serving as active, then it will be the same case for the standby as well as the same physical link will be used by standby too and hence...

Calculate MSS Value for NetScaler SD-WAN Appliances

By default, the MSS value is defined as 1380 bytes in aNetScaler SD-WANappliance, assuming the WAN infrastructure allows a standard IP packet maximum transmission unit MTU size of 1,500 bytes. Some WAN infrastructures might not provide enough space for MSS of 1380 bytes because additional protoco...

How To Replace Defective SSD/HDD of a NetScaler SD-WAN 4000 or 5000 Appliance

This article describes how to replace defective SSD/HDD of a NetScaler SD-WAN 4000 or 5000 appliance...

Troubleshooting NetScaler and NetScaler Gateway License Issues

Find the resolution based on the exact error message in the /var/log/license.log file. An Invalid Entry in /nsconfig/hosts An Invalid Entry in /nsconfig/rc.conf An Invalid Date in the System An Expired License A Corrupted License File An Invalid Entry in /nsconfig/hosts Error 1:33:22 lmgrd Unknow...

Various Connection Method Behaviours of Mobile Citrix Receiver with StoreFront and NetScaler Gateway

The following scenarios provide an understanding of when to use the StoreFront server FQDN and/or NetScaler Gateway FQDN in an App Controller solution when connecting from a mobile device: Internal Users Connecting to StoreFront Server Scenario 1 – Legacy PNA Site and No Store Available Scenario ...

How To Change The Default Password of nsroot User of a NetScaler SD-WAN WANOP Edition Appliance

The objective of this article is to provide the correct procedure to change the default password of nsroot user of a NetScaler SD-WAN WANOP Edition Appliance. SVM and XS instance can be accessed via CLI and customers can potentially change the password via the CLI. In this case the SVM password c...

How to Configure Authentication at StoreFront using NetScaler Gateway - NetScaler Configuration

This article describes how to configure authentication at StoreFront using NetScaler Gateway - NetScaler Configuration...

How to Configure Storefront for Authentication using NetScaler Gateway

This article describes how to configure authentication at StoreFront using NetScaler Gateway - StoreFront Configuration...

Citrix NetScaler ADC/NetScaler Gateway Authentication Bypass Vulnerability

Citrix NetScaler ADCs are application delivery controllers that optimize enterprise service delivery. A security vulnerability in Citrix NetScaler ADC/NetScaler Gateway management interface authentication allows remote attackers to bypass security restrictions and gain unauthorized access by...

Code injection

A vulnerability has been identified in the management interface of Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway 10.1 before build 135.18, 10.5 before build 66.9, 10.5e before build 60.7010.e, 11.0 before build 70.16, 11.1 before build 55.13, and 12.0 before build 53....