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  More about the way pads work: https://pad.constantvzw.org/p/etherpadsRADIO IMPLICANCIES #12.0
https://hotline.xpub.nl/implicancies
https://pzwiki.wdka.nl/mediadesign/Category:Implicancies

--->>>>>>>>>>> https://pad.xpub.nl/p/12.0

SSH HELPDESK

GOAL: ssh to the sandbox pi
the trick is that it is VIA the xpub.nl server.

I have a .ssh/config file that is like bookmarks for ssh....
Inside I have:

nano ~/.ssh/config

Host sandbox
    User mmurtaugh
    Hostname 10.0.0.11
    ProxyJump mmurtaugh@xpub.nl:2501
    Identityfile /home/murtaugh/.ssh/id_rsa
    Serveraliveinterval 30 

YOURS:
Host sandbox
    User m murtaugh
    Hostname 10.0.0.11
    ProxyJump mmurtaugh@xpub.nl:2501
    Identityfile /home/murtaugh/.ssh/id_rsa
    Serveraliveinterval 30 

Host sandbox
    User markvandenheuvel
    Hostname 10.0.0.11
    ProxyJump markvandenheuvel@xpub.nl:2501
    Identityfile /users/markvandenheuvel/.ssh/id_rsa
    Serveraliveinterval 30 

Host sandbox
    User implicant_04
    Hostname 10.0.0.11
    ProxyJump implicant_04@xpub.nl:2501
    Identityfile /users/lena/.ssh/id_rsa
    Serveraliveinterval 30 


Host hub.sandbox
User ioanatomici
Hostname 10.0.0.11
ProxyJump ioanatomici@xpub.nl:2501
Identityfile /home/ioanatomici/.ssh/id_rsa
Serveraliveinterval 30

Host itch
User xpub
Hostname XITCHXARCHIVEX2
Port 22
Identityfile /home/ioanatomici/.ssh/id_rsa
Serveraliveinterval 30

ioanatomici@DESKTOP-CJNAHDQ:~/.ssh$ ssh hub.sandbox
Enter passphrase for key '/home/ioanatomici/.ssh/id_rsa':
ioanatomici@10.0.0.11: Permission denied (publickey).

rm .ssh/id_rsa
rm .ssh/id_rsa.pub
ssh-keygen
(hit enter for all defaults)
cat ~/.ssh/id_rsa.pub

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDFrMM+4s4h60uaznTNsg1FELcLvt2YS6P0O1FM7xJfagX262GG3pgMhgo5Z8j7RMRwSCUZZKcK5pyGl0qCpgBZWcji9E2Ro4ry40ufm1F/JPxgRgKhkjg0K7aBtcPu3GQwQrRsR6APfVgKX5wWST2394UBr8nkgh+rrluV10JoO9vKqC9WCo7fRrzhkcjuG9kQ4PLuVsStaJVJhoOC0tnYWOY0H7bVM2yd8lsKpW9jq+ebboCllTqeLRN/ERQqZGXgZvv3Xx0osH8xe5Y7vnfM5w/VOZfmCPeUSF9P9Hsqhu93jJ/5e2E9BaB+3yY+wBxpshrAzDsKBaZc9gxgQkmF ioanatomici@DESKTOP-CJNAHDQ

ioanatomici@DESKTOP-CJNAHDQ:~/.ssh$ ssh hub.sandbox
ioanatomici@10.0.0.11: Permission denied (publickey).

    Identityfile /Users/--------/.ssh/id_rsa

So in fact you are ssh'ing THROUGH the xpub.nl, and this needs to work for you first:
    
ssh mmurtaugh@xpub.nl -p 2501

ssh claranoseda@xpub.nl -p 2501
ssh markvandenheuvel@xpub.nl -p 2501
ssh markvandenheuvel@xpub.nl -p 2501 -i ~/.ssh/id_rsa.pub

ssh ioanatomici@xpub.nl -p 2501

In order to connect, this server is configured to require a matching sshkey (not passwords).
CHECK YOUR LOCAL (laptop) ssh key

cat ~/.ssh/id_rsa.pub

cd
ls -al
drwx------  2 murtaugh murtaugh     4096 Apr 21 11:43  .ssh
drwx------  2 lena lena       4096 Apr 15 08:17  .ssh
drwxrwxrwx 1 ioanatomici ioanatomici     512 Apr 11 14:43 .ssh
drwx------    6 markvandenheuvel  staff      192 Apr 22 17:05 .ssh
cd .ssh
ls -al

-rw-------  1 murtaugh murtaugh  1675 Nov 30 14:13 id_rsa
-rw-r--r--  1 murtaugh murtaugh   396 Nov 30 14:13 id_rsa.pub


Marks:
    ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC8VICOgAyhZAh3BNPMjP748UkRoqLFzR1POpfcg3kEA0s4uXUF7Uv+ucvLnMkyntffcuryQuqixVkJq80hbB1fySRadwzsR8UE7BcMZYQlyAhzQaxUBWNcJpNH5MjMV/8DaDT+COFVb7VGVfXdX7GDMZFUz/CJrP+rWiv8TkpBLMhAmDx7d5bmMv38Eb8TvUu2DamoyOSSUxvXIEf+lgI5PCeGylW26iVcNWPG2ldQTwv2bYUL/N+4e3GB5G+rmsFybo8NqpLdANu0ygA7nnbGkkA2rajqV0GoP4S5yGq4pbTnEsJQP42rJtQXjOg+GHblOvpekfjX9yw1oFA1LUE5 markvandenheuvel@145.137.EARLY-REGISTRATION.of.SURFnet.invalid


message:
PTY allocation request failed on channel 0
Bye!
Connection to xpub.nl closed.

ssh markvandenheuvel@xpub.nl -p 2501
markvandenheuvel@xpub.nl: Permission denied (publickey).

17h21:
ssh: connect to host xpub.nl port 2501: Operation timed out


drwx------   6 markvandenheuvel  staff   192 Apr 22 17:05 .
drwxr-xr-x+ 46 markvandenheuvel  staff  1472 Apr 22 17:12 ..
-rw-r--r--    1 markvandenheuvel  staff   137 Jan 13 17:41 config
-rw-------   1 markvandenheuvel  staff  1675 Sep 30  2019 id_rsa
-rw-r--r--   1 markvandenheuvel  staff   444 Sep 30  2019 id_rsa.pub
-rw-r--r--   1 markvandenheuvel  staff   376 Apr 22 17:09 known_hosts

chmod 

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0644 for '/Users/markvandenheuvel/.ssh/id_rsa.pub' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "/Users/markvandenheuvel/.ssh/id_rsa.pub": bad permissions
markvandenheuvel@xpub.nl: Permission denied (publickey).
MacBook-Pro-van-Mark:~ markvandenheuvel$ 


ssh markvandenheuvel@xpub.nl -p 2501



>>>

Linux xpub.nl 4.19.0-6-amd64 #1 SMP Debian 4.19.67-2+deb10u2 (2019-11-11) x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
_____________________________________________________________________
WARNING! Your environment specifies an invalid locale.
 The unknown environment variables are:
   LC_CTYPE=UTF-8 LC_ALL=
 This can affect your user experience significantly, including the
 ability to manage packages. You may install the locales by running:

 sudo dpkg-reconfigure locales

 and select the missing language. Alternatively, you can install the
 locales-all package:

 sudo apt-get install locales-all

To disable this message for all users, run:
   sudo touch /var/lib/cloud/instance/locale-check.skip
_____________________________________________________________________


ioana:
    ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDXYxqMDcqWYgiGd8ygsx2C8ouGSTUl4tRIdrLGO2B/X5a9QRl5/qxv4+wDlFRPdhL4xAZ6plOLFrclgtz30Kc0IaDX+8GFYrsjqqcb87fJ+9AUq/D99ncZdhebcuV4mqYZA+WYXazlJmyANSpXwjL1kEIAtKXz9j2V5pY7h2h9dneYHJ02scp2a7VS/qQobUu8hK8nT2amljLUhkHTRi1QEqABUoizrzbwf6xWMPBtfaaRh/XMjoAohk+vMS2dNE3e1wVLOrtMkffX+eHlLQm2YrwJlQ2TrWgpUlcFtD/qaeVIVSJjyR3d7nDR6c8H6u2/x0CNwTtr37y6M3xI8Yh5 ioana@DESKTOP-CJNAHDQ

Femke:
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC96VRXMFHn1chc9ZXn+Zn/e1kCPQjT9VwzdaCp6n1YyAX6A4Vtoyyjl3yJdh2jTzT+J40vVxnrkoAbSX5lN31KWypQaDx3EKBFnh/MYhUMjNrD1dGw5XX8oKEKuoosf7af0gFouJQ1Ty4ErYuIe1RVa3pkWeFsgdcM0pH5hWeAANIArAET/L9CKgP9GK/hnRaOCz4KaT9dt6fN0z/C8+fcGPOYm9N3awtWC6QmyvnV7VAPUGH2iyDe/aEcX0PwQdWX5kwD002zpnvbxkpwe+Jo7QAcB03BmPFziSdQ3Uu1NdTwMj9DaCg5n9iQRRzBBejKCdJmHhNkJd2ZQysnQ8Ef lena@ustensile

Clara : 
    ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDQ+4hvPUg1MM5Z3E8Du8ZRBYL190+2A5pED/dM4f2ysEudra/IHZ9K6seesspHJp85UbBIhQpV+7+J7eed5DXHkpabapI7w8VUR3+QSUeyf+Mrx6i7f6PvoH2TQ3/ErjycvpMMzhZhzWTdt+l5D3LwHlsJEIU/c8FuK7Ibx44stRaYkjqryX7RFJBPkdwlNovWJCet7kz6Gnqx5MFl64noFzumeo9pOTq+qz4Nf/O5LLzMPivifeT+3tZtIJCd0lS+8r6OMwx10oV6x5lEyquot5QnDFzFhoWXq9hQz8W17Jah7gI3VLU2pCsB4ZZrQe6Z0uQTgy3gcN+htjwAn2F3 claranoseda@145-137-85-162.wlan.hro.nl


Linux xpub.nl 4.19.0-6-amd64 #1 SMP Debian 4.19.67-2+deb10u2 (2019-11-11) x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Fri Apr  3 15:20:33 2020 from 77.109.103.108
$