Dies wird von einem Ubuntu 16.04-Client ausgegeben:
OpenSSH_7.2p2 Ubuntu-4, OpenSSL 1.0.2g-fips 1 Mar 2016
debug1: Reading configuration data /home/manuth/.ssh/config
debug1: /home/manuth/.ssh/config line 1: Applying options for r2d2.manuth.life
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to r2d2.manuth.life [103.12.163.90] port 900.
debug1: Connection established.
debug1: identity file /home/manuth/.ssh/dqar-rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/dqar-rsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4
ssh_exchange_identification: Connection closed by remote host
Der Pfad und die Berechtigung für /home/manuth/.ssh/dqar-rsasind ebenfalls korrekt:
$ ls -l /home/manuth/.ssh/dqar-rsa*
-rw------- 1 manuth manuth 3243 Nov 7 11:27 /home/manuth/.ssh/dqar-rsa
-rw-r--r-- 1 manuth manuth 740 Nov 7 11:27 /home/manuth/.ssh/dqar-rsa.pub
Der Eintrag für diesen Host in ~/.ssh/configlautet:
host r2d2.manuth.life
IdentityFile ~/.ssh/dqar-rsa
Port 900
IdentitiesOnly yes
ForwardX11 yes
Wenn ich das versuchen zu kommentieren IdentityFileLinie, ist es nicht einmal lesen id_*innen ~/.ssh:
OpenSSH_7.2p2 Ubuntu-4, OpenSSL 1.0.2g-fips 1 Mar 2016
debug1: Reading configuration data /home/manuth/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to r2d2.manuth.life [103.12.163.90] port 900.
debug1: Connection established.
debug1: identity file /home/manuth/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/manuth/.ssh/id_ed25519 type 4
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4
ssh_exchange_identification: Connection closed by remote host
Dies scheint heute plötzlich aufzutauchen.
Bearbeiten: Inhalt innen ~/.ssh:
$ ls -la
insgesamt 36
drwx------ 2 manuth manuth 4096 Nov 7 16:28 .
drwxr-xr-x 53 manuth manuth 4096 Nov 7 13:31 ..
-rw-r--r-- 1 manuth manuth 805 Nov 7 12:10 authorized_keys
-rw-r--r-- 1 manuth manuth 543 Nov 7 13:47 config
-rw------- 1 manuth manuth 411 Nov 7 12:10 dqar-ed25519
-rw-r--r-- 1 manuth manuth 96 Nov 7 12:10 dqar-ed25519.pub
-rw------- 1 manuth manuth 3243 Nov 7 12:10 dqar-rsa
-rw-r--r-- 1 manuth manuth 740 Nov 7 12:10 dqar-rsa.pub
-rw-r--r-- 1 manuth manuth 1990 Nov 7 15:14 known_hosts
Edit 2: Ah hah, die Konsolenausgabe bestand aus mehreren Zeilen:
Nov 7 13:51:32 dqar sshd [11316]: fatal: Missing privilege separation directory: /var/empty
Der betreffende Server ist FreeBSD 10.3.
/var/empty.
ls -laim .ssh-Verzeichnis ausführen und die Ausgabe zu Ihrer Frage hinzufügen.