Hello, This email is a status update on Scientific Linux 7.4. The Scientific Linux 7.4 Release Candidate was published on August 28 2017. There is a serious bug in the upstream provided iptables and ip6tables services[1] which may result in the firewall being disabled rather than enabled. The Scientific Linux team considers this to be a release blocking issue. We are following the upstream bug reports closely and have published a SL bugfix package in the 'sl-testing'[2] repo. If an official fix is not forthcoming soon, we will consider building the SL bugfix package into the release. Thanks, Scientific Linux Team [1] https://bugzilla.redhat.com/show_bug.cgi?id=1477413 https://bugzilla.redhat.com/show_bug.cgi?id=1481207 https://bugzilla.redhat.com/show_bug.cgi?id=1486803 [2] http://ftp.scientificlinux.org/linux/scientific/7rolling/testing/x86_64/repoview/ -- Pat Riehecky Fermi National Accelerator Laboratory www.fnal.gov www.scientificlinux.org