I normally use SSH quite often and have never had a problem until recently. Now when I try and SSH into a server it just hangs and will eventually time out. This occurs when accessing devices on the local network (RPi running PiHole) and on servers run by Linode and probably others as well. Does anyone have any ideas of what is going on? Even when I specify -vvv there isn't much information other than it hangs. Not sure what else to try.
SSH problem on macOS 15.6.1
- Thread starter Cromulent
- Start date
I use iTerm2 as the Terminal app. The same problem happens on the Apple Terminal app. I don't use Private Relay. The server is up and running and accepting WebDAV and HTTPS connections.
Thanks for the reply.
Thank you again. I'll have a play around tomorrow morning when I have a bit more free time and check those things out.
I did some more searching and it actually looks like a really common and persistent issue with MacOS. Some other options:
- Try different ssh cipher
- Try Ethernet or with/without any docks
- Disable MacOS firewall and try again
On this basis, I would also try another machine or client (even a phone can ssh with certain apps - I use terminus on iOS). This may isolate the issue to the Mac at least.
- Try different ssh cipher
- Try Ethernet or with/without any docks
- Disable MacOS firewall and try again
On this basis, I would also try another machine or client (even a phone can ssh with certain apps - I use terminus on iOS). This may isolate the issue to the Mac at least.
Well I did a little testing and SSH works perfectly in a virtual machine running RHEL 10 so it is not a problem with the server. The same problem happens on my MBA though so something is being weird in macOS. I think I'll wait til macOS 26 comes out tomorrow to see if that fixes it before I spend a load of time trying to fix the issue.
Thank you for your help. I appreciate it.
Thank you for your help. I appreciate it.
Tried the homebrew package and that didn't work. I get no real useful information with -v it just hangs at the connection attempt stage.
I guess I'll just have to use a VM for SSH for the time being. I'll do some searching and see if I can find anymore information.
I guess I'll just have to use a VM for SSH for the time being. I'll do some searching and see if I can find anymore information.
I use ssh on a daily bases to other macs and RHEL servers and not experienced any issues at all at work...
and ssh into other macs, CLI only version of RPi, and ubuntu at home.. again no issues...
do you have a ssh config file setup on your machine?
try using an app like termius which has it's own config setup to rule out settings on your device itself.
and ssh into other macs, CLI only version of RPi, and ubuntu at home.. again no issues...
do you have a ssh config file setup on your machine?
try using an app like termius which has it's own config setup to rule out settings on your device itself.
Thank you. I'll try out Termius. Strange that it only happens on my Macs but works fine in a virtual machine. The debug output isn't helpful at all unfortunately.
Just tried Termius. Doesn't work. This is the debug output from ssh:
and it just hangs at the last line with no further output.
Code:
debug1: OpenSSH_10.0p2, LibreSSL 3.3.6
debug3: Running on Darwin 25.0.0 Darwin Kernel Version 25.0.0: Mon Aug 25 21:17:45 PDT 2025; root:xnu-12377.1.9~3/RELEASE_ARM64_T8103 arm64
debug3: Started with: ssh [email protected] -vvv
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
debug1: /etc/ssh/ssh_config line 54: Applying options for *
debug2: resolve_canonicalize: hostname 192.168.50.61 is address
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/Users/simon/.ssh/known_hosts'
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/Users/simon/.ssh/known_hosts2'
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug3: channel_clear_timeouts: clearing
debug3: ssh_connect_direct: entering
debug1: Connecting to 192.168.50.61 [192.168.50.61] port 22.
debug3: set_sock_tos: set socket 3 IP_TOS 0x48and it just hangs at the last line with no further output.
I haven't tried but the fact it happens on two completely different Macs that I've never transferred files between makes that unlikely. I can't try it now though. Will have to wait until tomorrow.