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Port 6258, what's going on

What is being transmitted over port 6258. I see that 1password agent is listening for something, but what? Is it safe to firewall this off so it doesn't leave my machine?


  • BenBen AWS Team

    Team Member
    Hi Matt,

    Welcome to the forums.

    This port is used only on the loopback interface ( for the 1Password extension to talk to the 1Password Agent. It should be safe to firewall it from any sources other than

    If you do a packet capture on lo0 and then filter by tcp.port == 6258 you can see what traffic is being passed. Nothing is transmitted in the clear.
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