VPN requirement beginning Wednesday, May 3, 2023
You will need to connect to the VPN if you are off-campus, using a minimally managed device, or using a personal device.
Messages
If you use SSH or SFTP to login to university Linux computers, you may have seen one of the following messages.
- New SSH key
The authenticity of host 'login.mtu.edu (141.219.70.85)' can't be established.
ECDSA key fingerprint is
SHA256:g1tQrJsPSV0HaDl0VaIF6zJhWp0JcoJlpR36o5/CjfA.
ECDSA key fingerprint is
MD5:d7:66:56:d4:3a:4f:86:7c:3b:d7:ba:8d:99:9d:dc:3e.
Are you sure you want to continue connecting (yes/no)?
- Changed SSH key
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle
attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:g1tQrJsPSV0HaDl0VaIF6zJhWp0JcoJlpR36o5/CjfA.
Please contact your system administrator.
Add correct host key in /home/josh/.ssh/known_hosts to get rid of this
message.
Offending ECDSA key in /home/josh/.ssh/known_hosts:7
ECDSA host key for login.mtu.edu has changed and you have requested
strict checking.
Host key verification failed.
An SSH key fingerprint is a way for you to verify that the computer you are connecting to is really the one you expected, and not a compromised system trying to steal your credentials. We publish the correct key fingerprints here so you can visually check to make sure you're getting the correct fingerprint when you see a message like those above.
SSH key fingerprints for Michigan Tech login servers
login.mtu.edu
ECDSA key fingerprint is SHA256:g1tQrJsPSV0HaDl0VaIF6zJhWp0JcoJlpR36o5/CjfA
ECDSA key fingerprint is
MD5:d7:66:56:d4:3a:4f:86:7c:3b:d7:ba:8d:99:9d:dc:3e
RSA key fingerprint is SHA256:3c+cu3PjHGcngU4/e+bHUDLE3W6WnqNV1ml62rIJwIo
RSA key fingerprint is MD5:b1:47:b8:2b:ad:51:1f:1f:bb:5b:f3:0e:51:96:73:75
ED25519 key fingerprint is
SHA256:o0KILQr9N+xvLB9GGdccJ53xtyXtPMLplXV1EIgJ0A8
ED25519 key fingerprint is
MD5:3c:4d:15:f5:d9:d7:68:e1:99:da:f3:76:52:4a:97:b9
colossus.it.mtu.edu
ECDSA key fingerprint is SHA256:nVSrk2B4t2C+Gjkzu/Yrqjpq5QQxOlQn9bBOjYZtbOc
ECDSA key fingerprint is
MD5:2f:00:8d:07:e6:b8:f8:2e:0e:01:19:1a:cc:28:38:61
RSA key fingerprint is SHA256:h9mQ3LGO9Ijk47O+fMSuBXzAyVE42hiNFv4tSKl5t78
RSA key fingerprint is MD5:93:c0:6c:69:8c:07:1d:e4:9d:e9:39:c9:cd:51:50:85
ED25519 key fingerprint is
SHA256:o67TRPLqDkekGNr2tuCVQ3Hrrlr61CZ5xt2gaOsGBdI
ED25519 key fingerprint is
MD5:f3:2b:28:0a:4e:bf:1e:f0:04:ae:68:80:43:1e:87:2a
guardian.it.mtu.edu
ECDSA key fingerprint is SHA256:ADo54F3nyLngER2gIT1+xTp0PY2UHfVF4ilDxxH1A5s
ECDSA key fingerprint is
MD5:67:c3:31:d3:82:74:18:47:4d:46:34:f3:4a:0f:b7:ff
RSA key fingerprint is SHA256:qazAITSAjyDpFvN/bvZPNMalgxdNqB6MUo6IQuZgkEY
RSA key fingerprint is MD5:1d:1a:cb:fe:bb:74:27:36:7d:da:2e:69:84:2f:08:16
ED25519 key fingerprint is
SHA256:jhWvYPPyLGYhEHJ6xT+2ix9CLsJiiR/rz8Wzx/IKl9A
ED25519 key fingerprint is
MD5:96:be:90:ca:97:6a:f6:aa:30:b9:2e:8d:22:6f:74:a1