nis

Support for NIS/YP services
Name Category Description
exim mail-mta A highly configurable, drop-in replacement for sendmail
net-tools sys-apps Standard Linux networking tools
pam sys-libs Linux-PAM (Pluggable Authentication Modules)
postfix mail-mta A fast and secure drop-in replacement for sendmail
sendmail mail-mta Widely-used Mail Transport Agent (MTA)
squid net-proxy Full-featured web proxy cache

Thank you!