F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

Forum Discussion

InfoSec_38553's avatar
InfoSec_38553
Icon for Nimbostratus rankNimbostratus
Apr 24, 2012

DNS monitor doesn't work

Hi all,     I'm trying to create DNS monitor for my DNS servers.     I used this script:   https://devcentral.f5.com/wiki/AdvDesignConfig.DNSMonitorUsingNSLookup.ashx     I didn't...
config
design
Hamish's avatar
Hamish
Icon for Cirrocumulus rankCirrocumulus
Apr 30, 2012
Actually you're both right. DNS runs over both TCP and UDP.

 

 

UDP by default (Because it's quick and well suited to a short query/response application).

 

 

TCP for larger queries (Where the response goes over a 512Byte datagram which used to be around 13 RR's. YMMV), and for zone transfers.

 

 

H