OS X 10.7 and 10.8 Lion
- Click the Terminal icon in the dock or in Finder under Application/Utilities/Terminal.
- Run the following command in the command line and press enter.
sudo killall -HUP mDNSResponder
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Cisco Secure Access Help Manage Registered Networks Clear Your DNS Cache Clear Your DNS Cache on Computers and Servers OS X 10.7 and 10.8 Lion
Last updated: Aug 07, 2025
sudo killall -HUP mDNSResponder