There are some real problems with not having ftp and telnet present in 10.13 now as per Apple's dictate.
Has anyone found a solid way to bring BSD
telnet back to macOS vs using
Apple's Telnet and FTP programs are back in High Sierra thanks to this homebrew pull request (by yours truly). Both the client and server of each one are back, and these are Apple's original versions of these programs.
inetutils unfortunately exhibits some bugs on High Sierra so this will be a better solution and should make everyone happy.
To install ALL the formulas in that PR, run this at the command line:
brew install tnftp tnftpd telnet telnetd
Of course you can install each of these separately as well:
# TNFTP client & server (formerly known as LukeMFTP, presumably due to being developed by Luke Mewburn
# and has been the default FTP for default FTP client included with NetBSD, FreeBSD, OpenBSD, DragonFly BSD,
# Darwin (macOS), and MidnightBSD):
brew install tnftp
brew install tnftpd
# Telnet client & server:
brew install telnet
brew install telnetd
Telnet is include in the inetutils port in MacPorts. To install it use the port command:
sudo port install inetutils
I searched through Apple support forums and found an answer that I believe will help others reinstall ftp and telnet on Mac High Sierra.
Navigate to www.gnu.org/software/inetutils/ Click on the HTTP download link for "Inetutils" Download "inetutils-1.9.4.tar.gz" tar zxvf inetutils-1.9.4.tar.gz
Direct ftp site -> http://ftp.gnu.org/gnu/inetutils/
sudo make install
telnet x.x.x.x port
I found the answer at this forum https://forums.developer.apple.com/thread/79056