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Re: Telnet command missing
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Cool - thought I may have had a dodgy install or something.
Strange thing to leave out - they must have had a reason? Hopefully it will be back in a next release as it's a good diagnostic tool to use.
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Re: Telnet command missing
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Hmm. telnet and ftp (also not present in 10.13 Beta) are insecure. Use ssh and sftp instead.
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Re: Telnet command missing
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Of course they are insecure, but sometimes you have no other choice but to use them. This command better returns, otherwise I am forced to install Windows/Linux...
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Re: Telnet command missing
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You can't use ssh to connect to port 25 to test a SMTP server, POP3 server, or check if a port is open at the destination..
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Re: Telnet command missing
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Learn how to enjoy the power of netcat. It is shipped in macOS as `nc' command.
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Re: Telnet command missing
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telnet is an incredibly useful diagnostic and debug tool .... I use it at some point nearly every day diagnosing SMTP connection problems, accessing old Cisco switches / routers on my internal private/secure network, connecting to serial consoles across a local/private network and more.
As a network engineer it is pretty much an essential tool (as is the escape key on a keyboard and to a lesser extent the function keys)
Apple don't seem to be considering us "technical" users when they make changes .... I hope they're readying this and re-consider
One of the things stopping me upgrading to a new MacBook Pro with Touch Bar (at a cost of about $5k) is because it doesn't have an easily accessible escape key (silly I know) ... removing telnet/ftp/etc from the OS is going to stop me upgradingWorse still, I might have to look at moving back to Linux / OpenBSD for my $dayjob ...
Apple, please consider the Pro users when you try to "improve" things. It was bad enough when you removed PPTP from iOS ... it may be flawed, but it was better than nothing - and now we're less secure as we have to use an unencrypted connection because L2TP isn't a viable option.There's being "brave" (god I miss the headphone jack) and there's being stupid for the sake of it / headlines
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Re: Telnet command missing
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Can't you simply use nc ?
A quick google shows this is probably the way going forward:
http://www.terminalinflection.com/use-netcat-not-telnet-to-test-network-connectivity/
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Re: Telnet command missing
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If you really need it: Install MacPorts <https://www.macports.org> and grab inetutils from my branch
https://github.com/Schamschula/macports/blob/master/net/inetutils/Portfile
This gives you all the standard network daemons and clients.
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Re: Telnet command missing
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Sorry if I'm blunt, but if you are a "technical" user who "might have to look at moving back to Linux / OpenBSD for my $dayjob" you should, at the very least, knew that netcat (nc) exists and that you can very well use it to accomplish the same things.
I agree with you that opening terminal and typing "telnet" is ingrained in our minds and as such, is the very first thing we'd do. As a matter of fact, I did, and that's how i noticed that the telnet program went the way of the Dodo in 10.13 dev beta, but the network engineer (hacker?) in me kicked in and I switched to nc, where I finished the SMTP diagnostic I was going to do.
I was a Network Engineer before moving on to network and nformation security and I understand why the bold move was done and, as a matter of fact, i encourage it. You should see the things one sees when working on security.
It's inconvenient, yes, but there are workarounds if you know what you're doing, and if you really need to use legacy (read: insecure) tech.
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Re: Telnet command missing
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Agree with jmorby as well. You can't use SSH until you telnet into a Cisco router/switch and generate the encryption keys. The other option is to use a USB-to-Serial adapter and use the console port and a terminal emulator. Of course, telnet/ftp are not secure until you can get in the device and configure it for usernames/passwords/SSH/sftp.
BTW - It would be nice if Apple would enhance Terminal to enable a ZTerm/PuTTY type virtual serial port for accessing Cisco devices and other consoles that don't have ethernet/IP.
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Re: Telnet command missing
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I think Apple have been shortsighted as telnet is such a useful tool. I thought I was going crazy when I couldn't find it but DID find it in my BASH history....
Sack the fool who didn't reckon for this. I know there are other tools and workarounds but THAT'S NOT THE POINT............ We choose a Mac because we want the freedom and power of unix tools, with a bit more class than linux!
Apple will have to bring Telnet back, because this won't rest........ Telnet may be insecure but we don't use it that way...........we use it for TEST purposes. I propose a twitter hashtag #bringMacTelnet..........
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Re: Telnet command missing
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You can copy Telnet over from a Seirra machine by jumping through a few hoops. I use Telnet all the time; filed a suggestion on Bugreporter to put it back. I agree with jmorby completely.
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Re: Telnet command missing
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any suggestions why i cannot copy the telnet application to /usr/bin
Operation not permitted
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Re: Telnet command missing
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Telnet is removed in high sierra due to its a 32bit program . I use ssh now.
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Re: Telnet command missing
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if I could i would but we have system they are using telnet
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Re: Telnet command missing
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To another workaround take a look at
https://forums.developer.apple.com/thread/91472
There you can find a step by step to solve that.
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Re: Telnet command missing
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There is a separate discussion thread here that is almost the same. I installed inetutils with Homebrew. I understand that it can also be had via MacPorts.
At the same time, libcurl IS still built into High Sierra. While I haven't tried this myself, I am expecting that some users would be satisfied by doing "curl telnet://...", "curl ftp...", etc. Heck, I think you can even use it for Gopher :-)
