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Forum Discussion

Connor's avatar
Connor
Icon for Nimbostratus rankNimbostratus
Jul 23, 2015

ASM DNS Servers

We are in the process of migrating to new DNS servers and I needed to update the DNS on the F5. I went into System -> Configuration -> Device -> DNS. I added the new DNS server in the DNS Lookup Server List and removed the old DNS servers. If I log into the console of the F5 and run an nslookup it uses the correct DNS server and all is good. If I go to Security -> Options -> Application Security -> Attack Signatures -> Attack Signature Updates. From this page when I manually check for updates and review my network logs. The F5 is making DNS queries to the DNS server I removed from the DNS Lookup Server List.

 

Is there another spot I need to up my DNS server settings?

 

We are running 11.5.2

 

ASM Advanced WAF
management
security

2 Replies

  • boneyard's avatar
    boneyard
    Icon for MVP rankMVP
    Jul 25, 2015

    don't believe there is another spot, it might be the system uses the old DNS server until the proces is restarted, might even require a box restart.

     

  • Connor's avatar
    Connor
    Icon for Nimbostratus rankNimbostratus
    Aug 20, 2015

    A box restart took care of it. I did not try restarting services. Thanks