On a couple of CentOS 5 servers sshd seems to have become 'unwrapped' - previously I was using TCP wrappers and hosts.allow/hosts.deny to control access, but these are now not being used. If I execute $ldd /usr/sbin/sshd | grep libwrap $ it outputs nothing, whereas on servers where TCP wrappers are still working I see libwrap.so.0 => /lib64/libwrap.so.0 (0x00002b2fbcb81000) Does anyone know what might cause this, or how it could be rectified? Updated As requested: $ rpm -qV openssh-server S.5....T c /etc/pam.d/sshd S.?....T c /etc/ssh/sshd_config S.5..... /usr/sbin/sshd