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You can choose any of the following options to access an SSO-enabled application

Services Username and Password - Default

On-site Fermi Windows system - Recommended for users who
- are on-site (or logged in to VPN) and
- use a Windows computer in the FERMI domain (this includes the vast majority of Fermilab-owned Windows computers) and
- use an Internet Explorer, Edge or Chrome browser

Kerberos (FERMI or FNAL) - Recommended for users who
- are on-site (or logged in to VPN) and
- use a Mac or Linux/Unix computer and
- use a browser configured for Kerberos authentication and
- have a valid Kerberos ticket from either the FNAL.GOV or the FERMI.WIN.FNAL.GOV realm

Fermilab CILogon certificate - Recommended for users who
- use a password or otherwise protected device or computer, which is not shared with others and
- use any browser on any operating system, including mobile and
- have a CILogon Basic CA certificate imported in your browser that was obtained using Fermilab credentials
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