Ticket #38959

Improve the timing or placement of "There is no entry for the server in your list of known hosts" dialog box

Open Date: 2019-02-16 07:00 Last Update: 2019-09-08 13:31

Reporter:
(Anonymous)
Owner:
Status:
Open [Owner assigned]
Component:
MileStone:
Priority:
3
Severity:
3
Resolution:
Fixed
File:
None
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Score: 0
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Details

If I SSH to a device that I have not accessed since I last booted the system, the box that prompts me to add the device to the "known hosts" file comes up after about a 1-second pause.

This means that it pops up while the username or password are being typed.

Suggestions:

  • have it pop-up before the authentication-method dialog box prompts for the username and password, or
  • have it pop-up after the username is entered, but before the password is encrypted and sent over the wire; or
  • place the dialog box so that the user can continue typing the username/password while the dialog box is still visible (i.e., make the dialog box "non-modal.")

Environment: Windows 7 Enterprise Service Pack 1 (64-bit) Virtual (VMware-based) desktop environment (VDI) Tera Term version 4.101 Includes Tera Term Pro version 2.3.

Ticket History (3/5 Histories)

2019-02-16 07:00 Updated by: None
  • New Ticket "Improve the timing or placement of "There is no entry for the server in your list of known hosts" dialog box" created
2019-02-21 18:28 Updated by: (del#1144)
Comment

認証方式を追加したときにおぼろげな記憶によると、SSHネゴシエーションから認証が完了してセッションが確立する(シェルが操作できるようになる)あたりまでの SSH メッセージのやりとりは、SSH 認証ダイアログに依存していたと思います。そのため SSH 接続開始か SSH ネゴシエーション開始のあたりで SSH認証ダイアログが出て、その後に known_hosts の確認ダイアログが出ているのだと思います。

おそらくこの方のイメージは SSH 認証ダイアログの前に known_hosts の確認が挟まるというものです。確かにその方が正しいと思いますが、大幅な実装の変更が必要になると思います。

ただ、この実装変更が実現できれば、コマンドライン等で必要なパラメータがそろっている場合には SSH 認証ダイアログを表示することなく接続を完了できると思います。

2019-09-01 11:34 Updated by: yutakapon
  • Owner Update from (None) to yutakapon
  • Milestone Update from (None) to Tera Term 4.105
2019-09-01 16:34 Updated by: yutakapon
Comment

Thank you for your feedback.

I am going to improved the display timing of SSH authentication dialog in next release.

have it pop-up before the authentication-method dialog box prompts for the username and password

The above idea will be adopted.
You can experience the improvement in the following archive:

https://osdn.net/projects/ttssh2/storage/snapshot/snapshot-r8058-20190901-yutaka-sshimproved.zip

2019-09-08 13:31 Updated by: yutakapon
  • Resolution Update from None to Fixed

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