1台のキーボードマウスで複数のマシンを操作できるようにするソフトウェア．マルチプラットホーム対応なので複数種類のOS混在環境でも利用できる．

Synergyのfork

• debauchee/barrier: Open\-source KVM software

• Install barrier for Linux using the Snap Store \| Snapcraft

snapにしては対応archtectureが多い

• amd64
• arm64
• armhf
• i386
• ppc64el
• s390x

• barrier GUI
• barrierc client
• barriers server
  • $HOME/.local/share/barrier/barrier.conf /etc/barrier.conf

/usr/share/doc/barrier/examples/barrier.conf.example /usr/share/doc/barrier/examples/barrier.conf.example-basic

–enable-crypto

~/.local/share/barrier/SSL/Barrier.pem

鍵指紋交換

Serverの鍵指紋( ~/.local/share/barrier/SSL/Fingerprints/Local.txt ) をClientの信頼リスト( ~/.local/share/barrier/SSL/Fingerprints/TrustedServers.txt )に追記する．

SERVER$ cat ~/.local/share/barrier/SSL/Fingerprints/Local.txt | ssh USER@REMOTECLIENT tee -a ~/.local/share/barrier/SSL/Fingerprints/TrustedServers.txt

$ loginctl show-session $(loginctl | grep $(whoami) | awk '{print $1}') -p Type
Type=wayland

waylandでは総力キー付きのキーイベントがBarrierに渡らないよう．マウス操作や単純なキー入力は出来る．しばらく待ち．

• Wayland support? · Issue \#109 · debauchee/barrier

遠隔の操作される対象PCのローカルkeyboardで入力できない．(恐らく誤操作対策)一度マウスを動かすと入力できるようになる．

[2022-08-07T20:23:22] NOTE: connecting to '192.168.68.101': 192.168.68.101:24800
[2022-08-07T20:23:22] DEBUG: Opening new socket: EC992030
[2022-08-07T20:23:22] INFO: OpenSSL 1.1.1q  5 Jul 2022
[2022-08-07T20:23:22] NOTE: peer fingerprint (SHA1): FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF (SHA256): FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF:FF
[2022-08-07T20:23:22] NOTE: fingerprint_db_path: /home/matoken/.local/share/barrier/SSL/Fingerprints/TrustedServers.txt
[2022-08-07T20:23:22] NOTE: Read 1 fingerprints from: /home/matoken/.local/share/barrier/SSL/Fingerprints/TrustedServers.txt
[2022-08-07T20:23:22] NOTE: Fingerprint does not match trusted fingerprint
[2022-08-07T20:23:22] ERROR: failed to verify server certificate fingerprint
[2022-08-07T20:23:37] DEBUG: Closing socket: EC992030

~/.local/share/barrier/SSL/Fingerprints/TrustedServers.txt を確認するとハッシュのみが書かれている． 繋がる端末では以下の形式でハッシュが格納されていた．

v2:sha1:ハッシュ(:なし，英小文字)  
v2:sha256:ハッシュ(:なし，英小文字)

形式を書き換えて繋がるようになった．

v2:sha1:ffffffffffffffffffffffffffffffffffffffff
v2:sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

• Synergy \- Share One Mouse & Keyboard Across Computers barrierのfork元
• dottedmag/x2x: x2x allows the keyboard, mouse on one X display to be used to control another X display\. 開発が止まっている