1/1/2024 0 Comments Ssh meaningThere is a procedure that may prevent malware from using the ssh-agent socket. When the agent starts, it creates a new directory in /tmp with restrictive permissions. The permissions are set as in a usual Linux or Unix system. Everyone who is able to connect to this socket also has access to the ssh-agent. Ssh-agent creates a socket and then checks the connections from ssh. Therefore, users run a program called ssh-agent that runs beyond the duration of a local login session, stores unencrypted keys in memory, and communicates with SSH clients using a Unix domain socket. A normal SSH client process cannot be used to store the unencrypted key because SSH client processes only last the duration of a remote login session. The most secure place to store the unencrypted key is in program memory, and in Unix-like operating systems, memory is normally associated with a process. Because typing the passphrase can be tedious, many users would prefer to enter it just once per local login session. For added security (for instance, against an attacker that can read any file on the local filesystem), it is common to store the private key in an encrypted form, where the encryption key is computed from a passphrase that the user has memorized. SSH client programs (such as ssh from OpenSSH) typically run for the duration of a remote login session and are configured to look for the user's private key in a file in the user's home directory (e.g. Secure Shell (SSH) is a protocol allowing secure remote login to a computer on a network using public-key cryptography. JSTOR ( May 2010) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
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