SSH

Generate local key to access remote host

On client:

   1 ssh-keygen -t dsa # with empty password
   2 cd ~/.ssh
   3 cat id_dsa.pub # public key
   4

On SSHserver:

   1 mkdir -p ~/.ssh
   2 cd /home/userx/.ssh
   3 vi authorized_keys # paste the id_dsa.pub (public key) content generated on the client
   4 chmod 0600 authorized_keys

Login from the client with ssh userx@remote.example.org should ask for not password. Useful to invoke commands remotely using ssh

Copy file to SSH server listening on different port

   1 scp -P 2222 filex userx@sshserver.example.org:/home/userx

Add listening ports on Ubuntu

Edit file /etc/ssh/sshd_config to set port 22 and 1234

   1 Port 22
   2 Port 1234

Restart service with service ssh restart

nano /etc/ssh/sshd_config
sshd -t 
service ssh restart
ss -at -n | grep -i listen

SSHFS

Ability to mount a user filesystem with FUSE on a remote SSH folder

   1 sudo apt install sshfs
   2 cd ~
   3 mkdir remotesshfsfolder
   4 sshfs user@host.example.org:/home/user remotesshfsfolder/ -p 1234

-  ⇤ ← Revision 3 as of 2016-09-05 01:16:11 → 
  Size: 764
  Editor: localhost
  Comment:
+   ← Revision 10 as of 2026-05-03 15:17:58 → ⇥
  Size: 1189
  Editor: vitor
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
+<<TableOfContents(2)>>
-Line 5:
+Line 6:
- * ssh-keygen -t dsa # with empty password
 * cd ~/.ssh
 * cat id_dsa.pub # public key
+{{{#!highlight sh
ssh-keygen -t dsa # with empty password
cd ~/.ssh
cat id_dsa.pub # public key
}}}
-Line 10:
+Line 13:
- * cd /home/userx/.ssh
 * vi authorized_keys # paste the id_dsa.pub (public key) content generated on the client
 * chmod 0600 authorized_keys
+{{{#!highlight sh
mkdir -p ~/.ssh
cd /home/userx/.ssh
vi authorized_keys # paste the id_dsa.pub (public key) content generated on the client
chmod 0600 authorized_keys
}}}
-Line 19:
+Line 24:
-{{{
+{{{#!highlight sh
-Line 25:
+Line 30:
-{{{
+{{{#!highlight sh
-Line 30:
+Line 35:
+{{{
nano /etc/ssh/sshd_config
sshd -t 
service ssh restart
ss -at -n | grep -i listen
}}}

== SSHFS ==
Ability to mount a user filesystem with FUSE on a remote SSH folder
{{{#!highlight sh
sudo apt install sshfs
cd ~
mkdir remotesshfsfolder
sshfs user@host.example.org:/home/user remotesshfsfolder/ -p 1234
}}}