Tcp Syn-Cookies - Avaya G250 Reference

CLI Commands

tcp syn-cookies

Use the tcp syn-cookies command to enable the TCP SYN cookies defense mechanism
against SYN attacks. Use the no form of this command to disable the TCP SYN cookies
defense mechanism against SYN attacks.
Note:
SYN cookies are disabled by default.
Note:
Note:
When enabling or disabling SYN cookies, you are prompted to copy the running
Note:
configuration to the start-up configuration using the copy running-config
startup-config command, and then to reset the device.
Syntax
[no] tcp syn-cookies
User level
read-write
Context
general
Examples
To enable SYN cookies:
G350-001(config)# tcp syn-cookies
To enable tcp syn-cookies copy the running configuration to the
start-upconfiguration file, and reset the device.
G350-001(config)# copy running-config startup-config
G350-001(config)# reset
...
! Coming up from reset - syn-cookies are now enabled
To disable SYN cookies:
G350-001(config)# no tcp syn-cookies
To disable tcp syn-cookies copy the running configuration to the
start-upconfiguration file, and reset the device.
Related commands
clear tcp syn-cookies
766 Avaya G250 and Avaya G350 CLI Reference
counters, show tcp syn-cookies