Citrix ADC

TCP SYN Idle Timeout

September 21, 2020

Contributed by:

SYN idle timeout is the timeout for establishing TCP connections that use LSN on the Citrix ADC appliance. If a TCP session is not established within the configured timeout period, the Citrix ADC removes the session. SYN idle timeout is useful in providing protection against SYN flood attacks. In an LSN configuration, the LSN group entity includes the SYN idle timeout setting.

Example:

In the following sample LSN configuration, SYN idle timeout is set to 30 secs for TCP connections related to subscribers from the 192.0.2.0/24 network.

add lsn client LSN-CLIENT-1

Done

bind lsn client LSN-CLIENT-1 -network 192.0.2.0 -netmask 255.255.255.0

Done

add lsn pool LSN-POOL-1

Done

bind lsn pool LSN-POOL-1 203.0.113.3

Done

add lsn group LSN-GROUP-1 -clientname LSN-CLIENT-1 –synidletimeout 30

Done

bind lsn group LSN-GROUP-1 -poolname pool1 LSN-POOL-1

Done
<!--NeedCopy-->

The official version of this content is in English. Some of the Citrix documentation content is machine translated for your convenience only. Citrix has no control over machine-translated content, which may contain errors, inaccuracies or unsuitable language. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, suitability, or correctness of any translations made from the English original into any other language, or that your Citrix product or service conforms to any machine translated content, and any warranty provided under the applicable end user license agreement or terms of service, or any other agreement with Citrix, that the product or service conforms with any documentation shall not apply to the extent that such documentation has been machine translated. Citrix will not be held responsible for any damage or issues that may arise from using machine-translated content.

TCP SYN Idle Timeout

September 21, 2020

Contributed by:

September 21, 2020

Contributed by:

TCP SYN Idle Timeout

In this article