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31652869 | 1 | /* $OpenBSD: ssh.h,v 1.78 2006/08/03 03:34:42 deraadt Exp $ */ |
93c3b6de | 2 | |
8efc0c15 | 3 | /* |
5260325f | 4 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
5260325f | 5 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
6 | * All rights reserved | |
6ae2364d | 7 | * |
bcbf86ec | 8 | * As far as I am concerned, the code I have written for this software |
9 | * can be used freely for any purpose. Any derived versions of this | |
10 | * software must be clearly marked as such, and if the derived work is | |
11 | * incompatible with the protocol description in the RFC file, it must be | |
12 | * called by a name other than "ssh" or "Secure Shell". | |
5260325f | 13 | */ |
8efc0c15 | 14 | |
8efc0c15 | 15 | /* Cipher used for encrypting authentication files. */ |
16 | #define SSH_AUTHFILE_CIPHER SSH_CIPHER_3DES | |
17 | ||
18 | /* Default port number. */ | |
19 | #define SSH_DEFAULT_PORT 22 | |
20 | ||
21 | /* Maximum number of TCP/IP ports forwarded per direction. */ | |
22 | #define SSH_MAX_FORWARDS_PER_DIRECTION 100 | |
23 | ||
aa3378df | 24 | /* |
25 | * Maximum number of RSA authentication identity files that can be specified | |
26 | * in configuration files or on the command line. | |
27 | */ | |
8efc0c15 | 28 | #define SSH_MAX_IDENTITY_FILES 100 |
29 | ||
ea067773 | 30 | /* |
31 | * Maximum length of lines in authorized_keys file. | |
32 | * Current value permits 16kbit RSA and RSA1 keys and 8kbit DSA keys, with | |
33 | * some room for options and comments. | |
34 | */ | |
35 | #define SSH_MAX_PUBKEY_BYTES 8192 | |
36 | ||
aa3378df | 37 | /* |
7f056bc5 | 38 | * Major protocol version. Different version indicates major incompatibility |
aa3378df | 39 | * that prevents communication. |
a8be9f80 | 40 | * |
aa3378df | 41 | * Minor protocol version. Different version indicates minor incompatibility |
42 | * that does not prevent interoperation. | |
43 | */ | |
a8be9f80 | 44 | #define PROTOCOL_MAJOR_1 1 |
45 | #define PROTOCOL_MINOR_1 5 | |
46 | ||
47 | /* We support both SSH1 and SSH2 */ | |
48 | #define PROTOCOL_MAJOR_2 2 | |
49 | #define PROTOCOL_MINOR_2 0 | |
8efc0c15 | 50 | |
aa3378df | 51 | /* |
52 | * Name for the service. The port named by this service overrides the | |
53 | * default port if present. | |
54 | */ | |
8efc0c15 | 55 | #define SSH_SERVICE_NAME "ssh" |
56 | ||
aa3378df | 57 | /* |
a8bbdc75 | 58 | * Name of the environment variable containing the process ID of the |
59 | * authentication agent. | |
aa3378df | 60 | */ |
b705bea0 | 61 | #define SSH_AGENTPID_ENV_NAME "SSH_AGENT_PID" |
8efc0c15 | 62 | |
aa3378df | 63 | /* |
64 | * Name of the environment variable containing the pathname of the | |
65 | * authentication socket. | |
66 | */ | |
42f11eb2 | 67 | #define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK" |
50da1126 | 68 | |
57112b5a | 69 | /* |
42f11eb2 | 70 | * Environment variable for overwriting the default location of askpass |
57112b5a | 71 | */ |
57112b5a | 72 | #define SSH_ASKPASS_ENV "SSH_ASKPASS" |
73 | ||
aa3378df | 74 | /* |
75 | * Force host key length and server key length to differ by at least this | |
76 | * many bits. This is to make double encryption with rsaref work. | |
77 | */ | |
8efc0c15 | 78 | #define SSH_KEY_BITS_RESERVED 128 |
79 | ||
aa3378df | 80 | /* |
81 | * Length of the session key in bytes. (Specified as 256 bits in the | |
82 | * protocol.) | |
83 | */ | |
8efc0c15 | 84 | #define SSH_SESSION_KEY_LENGTH 32 |
85 | ||
4bf9c10e | 86 | /* Used to identify ``EscapeChar none'' */ |
87 | #define SSH_ESCAPECHAR_NONE -2 | |
88 | ||
2ea6de2b | 89 | /* |
90 | * unprivileged user when UsePrivilegeSeparation=yes; | |
5de727d6 | 91 | * sshd will change its privileges to this user and its |
2ea6de2b | 92 | * primary group. |
93 | */ | |
9a0fbcb3 | 94 | #ifndef SSH_PRIVSEP_USER |
897fecd3 | 95 | #define SSH_PRIVSEP_USER "sshd" |
9a0fbcb3 | 96 | #endif |
2ea6de2b | 97 | |
82b00264 | 98 | /* Minimum modulus size (n) for RSA keys. */ |
99 | #define SSH_RSA_MINIMUM_MODULUS_SIZE 768 | |
100 | ||
fce39749 | 101 | /* Listen backlog for sshd, ssh-agent and forwarding sockets */ |
102 | #define SSH_LISTEN_BACKLOG 128 |