For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Devlin_T_149357's avatar
Devlin_T_149357
Jun 10, 2014

Checking for port 4353 between GTMs and LTMs

Hi all   We need to enable iQuery between our GTMs and LTMs. I have logged onto the GTMs and ran the following command to see if I can connect on port 4353 from the GTM to LTMs, to rule out any fi...
application delivery
BIG-IP DNS
deployment
LTM
SynACk_128568's avatar
SynACk_128568
Icon for Cirrostratus rankCirrostratus
Jun 10, 2014

Hi Delvin,

 

i guess port 22 and 4353 is listening on the F5 device . And on the selfip of LTM portlockdown is allow default or allowed for 4353 ,22 ports .

 

Big3d version is same on the gtm and ltm . Also crosscheck if any ACL blocking port 4353 ,22 .

 

LTM are defined in the server list of the GTM and there self ip are added .

 

Also check for the device certificates if they are working fine .

 

What error you are getting in /var/log/gtm . You can take packet capture on the LTM to check if any packets are making to LTM What is state is the connection between LTM and GTM . netstat -an output .

 

Also you can compare the working and non working case and see if any configuration change .