Forum Discussion

Adriano's avatar
Adriano
Icon for Nimbostratus rankNimbostratus
Jan 14, 2020

BIG IP LTM - Syn Cookie Monitor

Hello guys!

 

I'm making a study test and would like to know if it's possible to make a script, or something else, to show messages about the Syn Cookie... is that a way to put it in the user_alert.conf ? A message to show something like: if the syncookie is activated, a counter, show the server monitored... Is that a way to make it?

 

Thank you all!

application delivery
BIG-IP
LTM
Super-NetOps
    • Adriano's avatar
      Adriano
      Icon for Nimbostratus rankNimbostratus
      Jan 20, 2020

      In resume, I would like to create a graphic monitor to verify the Global Syn Check function, using the platform What's Up. Do you know if it's possible?

  • KeesvandenBos's avatar
    KeesvandenBos
    Icon for MVP rankMVP
    Jan 20, 2020

    Hi Adriano,

    There are a few snmp value's your what's up could query:

    sysStatHardSyncookieGen 1.3.6.1.4.1.3375.2.1.1.2.1.57

    sysStatHardSyncookieDet 1.3.6.1.4.1.3375.2.1.1.2.1.58

    sysStatHardSyncookieGen OBJECT-TYPE 
	SYNTAX Counter64
	MAX-ACCESS read-only
	STATUS current
	DESCRIPTION
		"The number of hardware SYN cookies are generated on the system."
	::= { sysGlobalStat 57 } 
 
sysStatHardSyncookieDet OBJECT-TYPE 
	SYNTAX Counter64
	MAX-ACCESS read-only
	STATUS current
	DESCRIPTION
		"The number of hardware SYN cookies are detected on the system."
	::= { sysGlobalStat 58 }

    Cheers,

    Kees

    • Adriano's avatar
      Adriano
      Icon for Nimbostratus rankNimbostratus
      Jan 20, 2020

      This is pretty good, I'll make this test. Thank you,Kees!!!