/* $NetBSD: ssh.h,v 1.12.2.1 2023/12/25 12:31:09 martin Exp $ */ /* $OpenBSD: ssh.h,v 1.90 2020/07/14 23:57:01 djm Exp $ */ /* * Author: Tatu Ylonen * Copyright (c) 1995 Tatu Ylonen , Espoo, Finland * All rights reserved * * As far as I am concerned, the code I have written for this software * can be used freely for any purpose. Any derived versions of this * software must be clearly marked as such, and if the derived work is * incompatible with the protocol description in the RFC file, it must be * called by a name other than "ssh" or "Secure Shell". */ /* Cipher used for encrypting authentication files. */ #define SSH_AUTHFILE_CIPHER SSH_CIPHER_3DES /* Default port number. */ #define SSH_DEFAULT_PORT 22 /* * Maximum number of certificate files that can be specified * in configuration files or on the command line. */ #define SSH_MAX_CERTIFICATE_FILES 100 /* * Maximum number of RSA authentication identity files that can be specified * in configuration files or on the command line. */ #define SSH_MAX_IDENTITY_FILES 100 /* * Major protocol version. Different version indicates major incompatibility * that prevents communication. * * Minor protocol version. Different version indicates minor incompatibility * that does not prevent interoperation. */ #define PROTOCOL_MAJOR_1 1 #define PROTOCOL_MINOR_1 5 /* We support only SSH2 */ #define PROTOCOL_MAJOR_2 2 #define PROTOCOL_MINOR_2 0 /* * Name for the service. The port named by this service overrides the * default port if present. */ #define SSH_SERVICE_NAME "ssh" /* * Name of the environment variable containing the process ID of the * authentication agent. */ #define SSH_AGENTPID_ENV_NAME "SSH_AGENT_PID" /* * Name of the environment variable containing the pathname of the * authentication socket. */ #define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK" /* * Environment variable for overwriting the default location of askpass */ #define SSH_ASKPASS_ENV "SSH_ASKPASS" /* * Environment variable to control whether or not askpass is used. */ #define SSH_ASKPASS_REQUIRE_ENV "SSH_ASKPASS_REQUIRE" /* * Force host key length and server key length to differ by at least this * many bits. This is to make double encryption with rsaref work. */ #define SSH_KEY_BITS_RESERVED 128 /* * Length of the session key in bytes. (Specified as 256 bits in the * protocol.) */ #define SSH_SESSION_KEY_LENGTH 32 /* Used to identify ``EscapeChar none'' */ #define SSH_ESCAPECHAR_NONE -2 /* Name of Kerberos service for SSH to use. */ #define KRB4_SERVICE_NAME "rcmd" /* * unprivileged user when UsePrivilegeSeparation=yes; * sshd will change its privileges to this user and its * primary group. */ #define SSH_PRIVSEP_USER "sshd" /* Listen backlog for sshd, ssh-agent and forwarding sockets */ #define SSH_LISTEN_BACKLOG 128 /* Limits for banner exchange */ #define SSH_MAX_BANNER_LEN 8192 #define SSH_MAX_PRE_BANNER_LINES 1024