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馃殌 Vu Dao 馃殌
馃殌 Vu Dao 馃殌

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HAProxy Basic Login Authentication

- In haproxy config, there is no limit to the number of http-request statements per instance so we can add the rules to request basic login to the site but whitelist specials IPs

馃殌 Setup HAProxy config which contains basic login to access the dashboard and allow access for special resource IP

  • Generate haproxy encrypted password
printf "thepassword" | mkpasswd --stdin --method=sha-256
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  • Modify haproxy.cfg which allow access for requests from source but requires login for others
userlist AuthUsers
        user haproxyreport password $5$3VeorK1XxvgRseQ$VBkOPCY2enWZsas.C6X9Iif0FPHDknXXXXXXXXX

frontend fe-verify
        bind *:443 ssl crt /etc/certs

        acl haproxy_report hdr(host)

        http-request set-header X-Forwarded-Proto https if { ssl_fc }
        use_backend haproxy-report-backend if haproxy_report

# haproxy-report-backend
backend haproxy-report-backend
        acl authorized http_auth(AuthUsers)
        acl nagios src
        http-request allow if nagios
        http-request auth realm haproxyreport if !authorized
        server haproxy-report
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Top comments (1)

gruentee profile image

I don't get why everyone seems to suggest echoing your password and piping it to mkpassword. To my mind this only makes sense in a programmatic use-case where one wants to avoid the script from showing a prompt.
But when generating your password manually using mkpasswd interactively has one security advantage: you don't leave your clear-text password in your history!

So instead of echo "the password" | mkpasswd --stdin one would better just use mkpassword 鈥 IMHO.