By default, chromium does not have kerberos authentication enabled. In order to enable it, you'll have to set the "--auth-server-whitelist=" flag to the startup script which starts the browser. [archy@castle-bravo ~]$ sudo vim /usr/lib64/chromium-browser/chromium-browser.sh You'll have to add the "--auth-server-whitelist=" to the "CHROMIUM_DISTRO_FLAGS="-directive so that it should look like this: CHROMIUM_DISTRO_FLAGS=" --enable-plugins \ --enable-extensions \ --enable-user-scripts \ --enable-printing \ --enable-sync \ --auto-ssl-client-auth \ --auth-server-whitelist=*.archyslife.lan " For Google Chrome you'll have to edit the /usr/bin/google-chrome-File [archy@castle-bravo ~]$ sudo vim /usr/bin/google-chrome and add the "--auth-server-whitelist="-Flag to the last exec-line like so: exec -a "$0" "$HERE/ch...