Increase scp speed

scp uses AES-128 to encrypt data, this is very safe, but also a bit slow. If you need more speed and still have security, you can use Blowfish or RC4.

Method 1: To increase the scp speed change chipher from the default AES-128 to Blowfish

scp -r -c blowfish /path/to/file_destination root@IP:/path/to/file

Method 2:  use RC4, which seems to be the fastest.

scp -r -c arcfour /path/to/file_destination root@IP:/path/to/file