File System Operations
- SSHFS: Mount remote file systems locally.
- Installation:
- Ubuntu/Debian:
sudo apt install sshfs - CentOS:
sudo yum install fuse-sshfs
Compression
- Compress Traffic:
- Use
ssh -C hostnameor addCompression yesto~/.ssh/configto enhance performance over slow connections. - Example with verbosity:
ssh -o "Compression yes" -v hostname.
- Use
X11 Forwarding
Forward Graphical Applications:
- Enable:
ssh -X user@serverorssh -o ForwardX11=yes user@server. - Trusted Forwarding (riskier):
ssh -Y user@server. - Disable:
ssh -x.
- Enable:
Configuration:
Client: Add to ~/.ssh/config
| Host * ForwardAgent yes ForwardX11 yes |
Server: Configure /etc/ssh/sshd_config:
| X11Forwarding yes |
| X11DisplayOffset 10 |
| X11UseLocalhost no |
Install xauth on the server for X11 authentication :
| sudo apt install xauth # Ubuntu/Debian |
| sudo yum install xauth # CentOS |
SSH Tunneling
Local Port Forwarding:
Route traffic from a local port to a remote machine.
Syntax:
ssh -L local_port:destination:remote_port user@ssh_server |
Example:
SOCKS Proxy:
Set up a dynamic proxy for traffic.
Syntax:
| ssh -D local_port_number user@remote_host |
Example with additional options:
Example (multiple hops):
Monitoring Traffic with SSH Tunnels
