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MacOSでSSHを使用すると、X接続が拒否されました。

tag-icon • tag-icon ssh x11 macos
MacOSでSSHを使用すると、X接続が拒否されました。

Macbookでbash端末を開き、実行中です。

ssh -X <some_ip>

これは<some_ip>Ubuntu 20.04 VMを表します。ログインに問題はありません。ただし、このようなコマンドを実行しようとすると、次のメッセージgeditが表示されます。

Unable to init server: Could not connect: Connection refused

(gedit:4179) Gtk-WARNING **: 22:36:47.151: cannot open display:

編集する：

以下はsshの実行結果です-vv。

OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /Users/daniel/.ssh/config
debug1: /Users/daniel/.ssh/config line 5: Applying options for partytime
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug1: /etc/ssh/ssh_config line 51: Applying options for *
debug2: resolve_canonicalize: hostname 192.168.0.124 is address
debug2: ssh_connect_direct
debug1: Connecting to 192.168.0.124 [192.168.0.124] port 22.
debug1: Connection established.
debug1: identity file /Users/daniel/.ssh/id_rsa type 0
debug1: identity file /Users/daniel/.ssh/id_rsa-cert type -1
debug1: identity file /Users/daniel/.ssh/id_dsa type -1
debug1: identity file /Users/daniel/.ssh/id_dsa-cert type -1
debug1: identity file /Users/daniel/.ssh/id_ecdsa type -1
debug1: identity file /Users/daniel/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/daniel/.ssh/id_ed25519 type -1
debug1: identity file /Users/daniel/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/daniel/.ssh/id_xmss type -1
debug1: identity file /Users/daniel/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_8.2p1 Ubuntu-4ubuntu0.1
debug1: match: OpenSSH_8.2p1 Ubuntu-4ubuntu0.1 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to 192.168.0.124:22 as 'daniel'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],[email protected],[email protected],ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected],zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ctos: 
debug2: languages stoc: 
debug2: first_kex_follows 0 
debug2: reserved 0 
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256
debug2: host key algorithms: rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected]
debug2: compression stoc: none,[email protected]
debug2: languages ctos: 
debug2: languages stoc: 
debug2: first_kex_follows 0 
debug2: reserved 0 
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:v4IB0eX8tnrBnIVe/ejHBFNPAcpnPpctNlcgapyxlj0
debug1: Host '192.168.0.124' is known and matches the ECDSA host key.
debug1: Found key in /Users/daniel/.ssh/known_hosts:5
debug2: set_newkeys: mode 1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: /Users/daniel/.ssh/id_rsa RSA SHA256:nRkJrD4P1PL16Mde2OWWXUoyBP55fxcnZ5TSzP+CAVM
debug1: Will attempt key: /Users/daniel/.ssh/id_dsa 
debug1: Will attempt key: /Users/daniel/.ssh/id_ecdsa 
debug1: Will attempt key: /Users/daniel/.ssh/id_ed25519 
debug1: Will attempt key: /Users/daniel/.ssh/id_xmss 
debug2: pubkey_prepare: done
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,[email protected],ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected]>
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering public key: /Users/daniel/.ssh/id_rsa RSA SHA256:nRkJrD4P1PL16Mde2OWWXUoyBP55fxcnZ5TSzP+CAVM
debug2: we sent a publickey packet, wait for reply
debug1: Server accepts key: /Users/daniel/.ssh/id_rsa RSA SHA256:nRkJrD4P1PL16Mde2OWWXUoyBP55fxcnZ5TSzP+CAVM
debug1: Authentication succeeded (publickey).
Authenticated to 192.168.0.124 ([192.168.0.124]:22).
debug1: channel 0: new [client-session]
debug2: channel 0: send open
debug1: Requesting [email protected]
debug1: Entering interactive session.
debug1: pledge: exec
debug1: client_input_global_request: rtype [email protected] want_reply 0
debug1: Remote: /home/daniel/.ssh/authorized_keys:1: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
debug1: Remote: /home/daniel/.ssh/authorized_keys:1: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
debug2: channel_input_open_confirmation: channel 0: callback start
debug1: X11 forwarding requested but DISPLAY not set
debug2: fd 3 setting TCP_NODELAY
debug2: client_session2_setup: id 0
debug2: channel 0: request pty-req confirm 1
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug2: channel 0: request shell confirm 1
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug2: channel_input_status_confirm: type 99 id 0
debug2: PTY allocation request accepted on channel 0
debug2: channel 0: rcvd adjust 2097152
debug2: channel_input_status_confirm: type 99 id 0
debug2: shell request accepted on channel 0

答え1

MacbookはX11アプリケーションウィンドウを表示できません。Xクォーツソフトウェアがインストールされました。以前のバージョンのMacOS Xと同梱されていましたが、今では別々のパッケージです。

XQuartzをインストールした後、X11 GUIプログラムを起動しようとするたびに自動的に起動する必要があります。例では、ssh -X接続を確立してgeditリモートシステムでコマンドを実行すると、XQuartzアイコンが自動的にDockに表示され、geditAウィンドウが表示されます。表示されます。

答え2

Ubuntu VMで設定ファイルを編集します。/etc/ssh/sshd_config

その後、設定 X11Forwarding yes

最後に、SSHデーモンを再起動してください。

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