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Forum Discussion

TMdog21_318632's avatar
TMdog21_318632
Icon for Nimbostratus rankNimbostratus
Apr 25, 2017

Connection Refused

I have a customer trying to connect via telnet to the VIP on our F5, the first attempt, refused, second attempt is refused but the third attempt the connection is established. not sure why that is ha...
BIG-IP
security
Samir_Jha_52506's avatar
Samir_Jha_52506
Icon for Noctilucent rankNoctilucent
Apr 25, 2017

Mostly back end server port flap issue. Please check the back-end server.

Unix comamnd

    netstat -an | grep “:25 “
    netstat -plnt | grep ':80'
TMdog21_318632's avatar
TMdog21_318632
Icon for Nimbostratus rankNimbostratus
Apr 25, 2017

are there logs to check?