ftp.scientificlinux.org/linux/scientific/7.2/x86_64/updates/security :
firefox-52.1.0-2.el7_3.i686.rpm
firefox-52.1.0-2.el7_3.x86_64.rpm
nss-3.28.4-1.0.el7_3.i686.rpm
nss-3.28.4-1.0.el7_3.x86_64.rpm
nss-devel-3.28.4-1.0.el7_3.i686.rpm
nss-devel-3.28.4-1.0.el7_3.x86_64.rpm
nss-pkcs11-devel-3.28.4-1.0.el7_3.i686.rpm
nss-pkcs11-devel-3.28.4-1.0.el7_3.x86_64.rpm
nss-sysinit-3.28.4-1.0.el7_3.x86_64.rpm
nss-tools-3.28.4-1.0.el7_3.x86_64.rpm
nss-util-3.28.4-1.0.el7_3.i686.rpm
nss-util-3.28.4-1.0.el7_3.x86_64.rpm
nss-util-devel-3.28.4-1.0.el7_3.i686.rpm
nss-util-devel-3.28.4-1.0.el7_3.x86_64.rpm