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Domain of the Technomancer

Domain of the Technomancer

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SSH

Running X11 Apps When Using sudo

2022-06-182022-06-15 by Scott Garrett

So you have your nice shiny linux box, and you are properly not allowing remote root logins, but you still need to be able to run X11 apps as root through ssh. But when you do, you get the dreaded error like: Gtk-WARNING **: 19:41:13.383: cannot open display: localhost:10.0 Well that is a pain. This … Read more

Categories Linux, Raspberry Pi, RHEL/CentOS, SSH, Ubuntu Tags Linux, SSH, Ubuntu, X11 Leave a comment

SSH Bypassing MFA/Authentication on Subsequent Connections

2022-03-09 by Scott Garrett

Having MFA on a server is a good thing. But it can be a real PITA when you are required to pull out your phone for every single connection to the server, especially if you are performing some kind of automated task. Fortunately, ssh provides a mechanism to allow you to use the proper authentication … Read more

Categories SSH Tags SSH Leave a comment

Adding your ssh keys to MacOS Keychain

2022-02-27 by Scott Garrett

One really nice feature of MacOS is the integration of ssh keys with the OS keychain. This allows you to put a password on your ssh private key(s) that will unlock when you log in. Using this feature, combined with the ssh agent, and you can have a password protected ssh key, and not have … Read more

Categories Apple, MacOS, SSH Tags MacOS, SSH Leave a comment

Adding SSH Hashes to DNS

2021-12-302021-12-29 by Scott Garrett

To add an extra layer of security to your server, especially when you are working on a shared client, you can add SSHFP records to the DNS record of the host. This allows the ssh client to pull the hash of the server from DNS to add an extra layer of verification that the host … Read more

Categories DNS, Linux, SSH Tags Linux, MacOS, SSH Leave a comment

Finding an SSH Known Host That is Masked

2021-12-312021-12-29 by Scott Garrett

If you have the HashKnownHosts option for your ssh client set to yes, then you have a more secure known_hosts file so that a bad actor cannot easily get a list of the hosts you connect to, which is a good idea. However, it also hides it from you, so if you need to remove … Read more

Categories Linux, MacOS, SSH Tags Linux, MacOS, SSH Leave a comment

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