SSH & Remote Administration

Expediting SSH Transfers with Compression

🧩 The Challenge

Transferring large text-based logs or configuration files over low-bandwidth or high-latency network connections is often slow. Large file transmissions frequently bottleneck at the network layer rather than the disk.

💡 The Fix

Enable transparent Zlib compression for your SSH session to reduce the data payload size during transit before it leaves your local interface.

ssh -C user@remote-host "cat /var/log/syslog" > local_syslog.txt

⚙️ Why It Works

The -C flag instructs the SSH client to compress all data sent between the local machine and the remote server using the gzip algorithm, effectively minimizing the bytes sent over the wire.

🚀 Pro-Tip: You can make this setting permanent by adding Compression yes to your specific host entry within your ~/.ssh/config file.

Linux Tips & Tricks | © ngelinux.com | 7/7/2026