Tested SSHv2 Clients The following SSH clients have been tested with SSHv2: SSH Secure Shell 3.2.3 VanDyke SecureCRT 5.2.2 F-Secure SSH Client 5.3 and 6.0 PuTTY 0.62 Note: When you use PuTTY on a Windows system, an SSH session may drop if left idle for more than 45 minutes. openssh 9.3RUCKUS ICX SSH Client Note: Supported RSA host key sizes are 2048, 3072, and 4096. Supported ECDSA host key sizes are 256, 384, and 521. Parent topic: SSH Version 2 Overview