1 /* 2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * All rights reserved 5 * 6 * As far as I am concerned, the code I have written for this software 7 * can be used freely for any purpose. Any derived versions of this 8 * software must be clearly marked as such, and if the derived work is 9 * incompatible with the protocol description in the RFC file, it must be 10 * called by a name other than "ssh" or "Secure Shell". 11 */ 12 13 /* RCSID("$OpenBSD: ssh.h,v 1.62 2001/01/23 10:45:10 markus Exp $"); */ 14 15 #ifndef SSH_H 16 #define SSH_H 17 18 /* Cipher used for encrypting authentication files. */ 19 #define SSH_AUTHFILE_CIPHER SSH_CIPHER_3DES 20 21 /* Default port number. */ 22 #define SSH_DEFAULT_PORT 22 23 24 /* Maximum number of TCP/IP ports forwarded per direction. */ 25 #define SSH_MAX_FORWARDS_PER_DIRECTION 100 26 27 /* 28 * Maximum number of RSA authentication identity files that can be specified 29 * in configuration files or on the command line. 30 */ 31 #define SSH_MAX_IDENTITY_FILES 100 32 33 /* 34 * Major protocol version. Different version indicates major incompatiblity 35 * that prevents communication. 36 * 37 * Minor protocol version. Different version indicates minor incompatibility 38 * that does not prevent interoperation. 39 */ 40 #define PROTOCOL_MAJOR_1 1 41 #define PROTOCOL_MINOR_1 5 42 43 /* We support both SSH1 and SSH2 */ 44 #define PROTOCOL_MAJOR_2 2 45 #define PROTOCOL_MINOR_2 0 46 47 /* 48 * Name for the service. The port named by this service overrides the 49 * default port if present. 50 */ 51 #define SSH_SERVICE_NAME "ssh" 52 53 /* 54 * Name of the environment variable containing the pathname of the 55 * authentication socket. 56 */ 57 #define SSH_AGENTPID_ENV_NAME "SSH_AGENT_PID" 58 59 /* 60 * Name of the environment variable containing the pathname of the 61 * authentication socket. 62 */ 63 #define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK" 64 65 /* 66 * Environment variable for overwriting the default location of askpass 67 */ 68 #define SSH_ASKPASS_ENV "SSH_ASKPASS" 69 70 /* 71 * Force host key length and server key length to differ by at least this 72 * many bits. This is to make double encryption with rsaref work. 73 */ 74 #define SSH_KEY_BITS_RESERVED 128 75 76 /* 77 * Length of the session key in bytes. (Specified as 256 bits in the 78 * protocol.) 79 */ 80 #define SSH_SESSION_KEY_LENGTH 32 81 82 /* Name of Kerberos service for SSH to use. */ 83 #define KRB4_SERVICE_NAME "rcmd" 84 85 #endif /* SSH_H */ 86