google colabにssh接続できなくなった。

以前、調査した方法でssh経由でクライアントPCからgoogle colabにアクセスしようと試みているが、どうしても、アクセスできない。

unachan-kz.hatenablog.com

エラー内容

OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /Users/haradakz/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug1: Connecting to 2.tcp.ngrok.io port 19305.
debug1: Connection established.
debug1: identity file /Users/haradakz/.ssh/id_rsa type 0
debug1: identity file /Users/haradakz/.ssh/id_rsa-cert type -1
debug1: identity file /Users/haradakz/.ssh/id_dsa type 1
debug1: identity file /Users/haradakz/.ssh/id_dsa-cert type -1
debug1: identity file /Users/haradakz/.ssh/id_ecdsa type -1
debug1: identity file /Users/haradakz/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/haradakz/.ssh/id_ed25519 type -1
debug1: identity file /Users/haradakz/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/haradakz/.ssh/id_xmss type -1
debug1: identity file /Users/haradakz/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.1
kex_exchange_identification: Connection closed by remote host

結構時間を使って調べているが、解決しない。

追加

colab-sshで接続を確認しました。

unachan-kz.hatenablog.com