Secure Shell (SSH) is a cryptographic network protocol for secure data communication and is given access to perform commands remotely (remote) between two computer networks. Every server that is created on a Virtual Private Server (VPS) and Virtual Data Center (VDC) that uses the Linux Operating System and has a Public IP, has an automatic SSH feature. This SSH functions to access into the server from any device that supports the use of this SSH, Secure Shell (SSH) is designed as a replacement for Telnet and other insecure Remote Shell Protocols such as Berkeley RSH and REXEC Protocol, which send information, especially passwords in text form, which makes it vulnerable to interception and uses a packet analyzer. The encryption used by SSH aims to provide confidentiality and data integrity through insecure networks, such as the Internet. SSH is safer than similar protocols, but the SSH protocol is vulnerable to certain types of attacks. In general, this attack is shown in the first version of SSH (SSH-1) which does have a weaker level of security than the second version of SSH (SSH-2).