annotate dropbear.8 @ 1168:509cf5df51c6

Avoid queueing into circbuffer when the channel is about to close
author Matt Johnston <matt@ucc.asn.au>
date Thu, 19 Nov 2015 23:52:52 +0800
parents 67d8a904f5a9
children 80cacacfec23
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1 .TH dropbear 8
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 .SH NAME
821
f8b28a3de6cb Don't say "SSH 2" any more since protocol version 1 is irrelevant
Matt Johnston <matt@ucc.asn.au>
parents: 690
diff changeset
3 dropbear \- lightweight SSH server
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
4 .SH SYNOPSIS
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
5 .B dropbear
1153
67d8a904f5a9 don't silently ignore extra flag arguments
Matt Johnston <matt@ucc.asn.au>
parents: 1146
diff changeset
6 [flag arguments] [\-b
860
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
7 .I banner\fR]
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
8 [\-r
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
9 .I hostkeyfile\fR] [\-p
576
c470649fb627 Mention -p's address argument in manpage synopsis
Matt Johnston <matt@ucc.asn.au>
parents: 569
diff changeset
10 .IR [address:]port ]
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
11 .SH DESCRIPTION
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12 .B dropbear
946
17d874ae93a1 Add '-V' for version
Matt Johnston <matt@ucc.asn.au>
parents: 875
diff changeset
13 is a small SSH server
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 .SH OPTIONS
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
15 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16 .B \-b \fIbanner
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17 bannerfile.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18 Display the contents of the file
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
19 .I banner
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
20 before user login (default: none).
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
21 .TP
860
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
22 .B \-r \fIhostkey
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
23 Use the contents of the file
860
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
24 .I hostkey
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
25 for the SSH hostkey.
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 This file is generated with
860
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
27 .BR dropbearkey (1)
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
28 or automatically with the '-R' option. See "Host Key Files" below.
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29 .TP
860
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
30 .B \-R
875
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 860
diff changeset
31 Generate hostkeys automatically. See "Host Key Files" below.
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
32 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33 .B \-F
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34 Don't fork into background.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
35 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
36 .B \-E
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37 Log to standard error rather than syslog.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
38 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
39 .B \-m
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
40 Don't display the message of the day on login.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
41 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
42 .B \-w
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
43 Disallow root logins.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
44 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
45 .B \-s
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
46 Disable password logins.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
47 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
48 .B \-g
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
49 Disable password logins for root.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
50 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
51 .B \-j
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
52 Disable local port forwarding.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
54 .B \-k
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
55 Disable remote port forwarding.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
56 .TP
438
4bfd22bac1dc Document -p [address:]port
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
57 .B \-p \fI[address:]port
4bfd22bac1dc Document -p [address:]port
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
58 Listen on specified
4bfd22bac1dc Document -p [address:]port
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
59 .I address
4bfd22bac1dc Document -p [address:]port
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
60 and TCP
4bfd22bac1dc Document -p [address:]port
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
61 .I port.
4bfd22bac1dc Document -p [address:]port
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
62 If just a port is given listen
4bfd22bac1dc Document -p [address:]port
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
63 on all addresses.
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
64 up to 10 can be specified (default 22 if none specified).
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
65 .TP
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
66 .B \-i
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
67 Service program mode.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
68 Use this option to run
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
69 .B dropbear
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
70 under TCP/IP servers like inetd, tcpsvd, or tcpserver.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
71 In program mode the \-F option is implied, and \-p options are ignored.
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 181
diff changeset
72 .TP
325
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
73 .B \-P \fIpidfile
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
74 Specify a pidfile to create when running as a daemon. If not specified, the
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
75 default is /var/run/dropbear.pid
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
76 .TP
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 181
diff changeset
77 .B \-a
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 181
diff changeset
78 Allow remote hosts to connect to forwarded ports.
449
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
79 .TP
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
80 .B \-W \fIwindowsize
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
81 Specify the per-channel receive window buffer size. Increasing this
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
82 may improve network performance at the expense of memory use. Use -h to see the
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
83 default buffer size.
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
84 .TP
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
85 .B \-K \fItimeout_seconds
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
86 Ensure that traffic is transmitted at a certain interval in seconds. This is
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
87 useful for working around firewalls or routers that drop connections after
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
88 a certain period of inactivity. The trade-off is that a session may be
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
89 closed if there is a temporary lapse of network connectivity. A setting
946
17d874ae93a1 Add '-V' for version
Matt Johnston <matt@ucc.asn.au>
parents: 875
diff changeset
90 if 0 disables keepalives. If no response is received for 3 consecutive keepalives the connection will be closed.
515
fe30d2a2d626 - Document idle_timeout
Matt Johnston <matt@ucc.asn.au>
parents: 514
diff changeset
91 .TP
fe30d2a2d626 - Document idle_timeout
Matt Johnston <matt@ucc.asn.au>
parents: 514
diff changeset
92 .B \-I \fIidle_timeout
fe30d2a2d626 - Document idle_timeout
Matt Johnston <matt@ucc.asn.au>
parents: 514
diff changeset
93 Disconnect the session if no traffic is transmitted or received for \fIidle_timeout\fR seconds.
946
17d874ae93a1 Add '-V' for version
Matt Johnston <matt@ucc.asn.au>
parents: 875
diff changeset
94 .TP
17d874ae93a1 Add '-V' for version
Matt Johnston <matt@ucc.asn.au>
parents: 875
diff changeset
95 .B \-V
17d874ae93a1 Add '-V' for version
Matt Johnston <matt@ucc.asn.au>
parents: 875
diff changeset
96 Print the version
17d874ae93a1 Add '-V' for version
Matt Johnston <matt@ucc.asn.au>
parents: 875
diff changeset
97
510
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
98 .SH FILES
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
99
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
100 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
101 Authorized Keys
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
102
1146
3c8403f4669d Fix typo in dropbear(8)'s manpage
Guilhem Moulin <guilhem@fripost.org>
parents: 946
diff changeset
103 ~/.ssh/authorized_keys can be set up to allow remote login with a RSA,
3c8403f4669d Fix typo in dropbear(8)'s manpage
Guilhem Moulin <guilhem@fripost.org>
parents: 946
diff changeset
104 ECDSA, or DSS
510
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
105 key. Each line is of the form
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
106 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
107 [restrictions] ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIgAsp... [comment]
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
108
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
109 and can be extracted from a Dropbear private host key with "dropbearkey -y". This is the same format as used by OpenSSH, though the restrictions are a subset (keys with unknown restrictions are ignored).
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
110 Restrictions are comma separated, with double quotes around spaces in arguments.
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
111 Available restrictions are:
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
112
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
113 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
114 .B no-port-forwarding
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
115 Don't allow port forwarding for this connection
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
116
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
117 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
118 .B no-agent-forwarding
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
119 Don't allow agent forwarding for this connection
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
120
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
121 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
122 .B no-X11-forwarding
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
123 Don't allow X11 forwarding for this connection
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
124
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
125 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
126 .B no-pty
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
127 Disable PTY allocation. Note that a user can still obtain most of the
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
128 same functionality with other means even if no-pty is set.
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
129
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
130 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
131 .B command="\fIforced_command\fR"
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
132 Disregard the command provided by the user and always run \fIforced_command\fR.
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
133
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
134 The authorized_keys file and its containing ~/.ssh directory must only be
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
135 writable by the user, otherwise Dropbear will not allow a login using public
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
136 key authentication.
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
137
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
138 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
139 Host Key Files
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
140
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
141 Host key files are read at startup from a standard location, by default
860
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
142 /etc/dropbear/dropbear_dss_host_key, /etc/dropbear/dropbear_rsa_host_key, and
1146
3c8403f4669d Fix typo in dropbear(8)'s manpage
Guilhem Moulin <guilhem@fripost.org>
parents: 946
diff changeset
143 /etc/dropbear/dropbear_ecdsa_host_key
860
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
144 or specified on the commandline with -r. These are of the form generated
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
145 by dropbearkey. The -R option can be used to automatically generate keys
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
146 in the default location - keys will be generated after startup when the first
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
147 connection is established. This had the benefit that the system /dev/urandom
057204b3dd61 docs for ecdsa
Matt Johnston <matt@ucc.asn.au>
parents: 821
diff changeset
148 random number source has a better chance of being securely seeded.
510
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
149
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
150 .TP
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
151 Message Of The Day
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
152
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
153 By default the file /etc/motd will be printed for any login shell (unless
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
154 disabled at compile-time). This can also be disabled per-user
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
155 by creating a file ~/.hushlogin .
b85507ade010 - Update manuals, include section on authorized_keys
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
156
569
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
157 .SH ENVIRONMENT VARIABLES
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
158 Dropbear sets the standard variables USER, LOGNAME, HOME, SHELL, PATH, and TERM.
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
159
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
160 The variables below are set for sessions as appropriate.
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
161
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
162 .TP
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
163 .B SSH_TTY
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
164 This is set to the allocated TTY if a PTY was used.
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
165
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
166 .TP
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
167 .B SSH_CONNECTION
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
168 Contains "<remote_ip> <remote_port> <local_ip> <local_port>".
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
169
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
170 .TP
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
171 .B DISPLAY
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
172 Set X11 forwarding is used.
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
173
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
174 .TP
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
175 .B SSH_ORIGINAL_COMMAND
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
176 If a 'command=' authorized_keys option was used, the original command is specified
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
177 in this variable. If a shell was requested this is set to an empty value.
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
178
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
179 .TP
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
180 .B SSH_AUTH_SOCK
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
181 Set to a forwarded ssh-agent connection.
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
182
821
f8b28a3de6cb Don't say "SSH 2" any more since protocol version 1 is irrelevant
Matt Johnston <matt@ucc.asn.au>
parents: 690
diff changeset
183 .SH NOTES
f8b28a3de6cb Don't say "SSH 2" any more since protocol version 1 is irrelevant
Matt Johnston <matt@ucc.asn.au>
parents: 690
diff changeset
184 Dropbear only supports SSH protocol version 2.
569
6f472dc54da7 - Set $SSH_CONNECTION
Matt Johnston <matt@ucc.asn.au>
parents: 515
diff changeset
185
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 .SH AUTHOR
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 Matt Johnston ([email protected]).
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 .br
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 Gerrit Pape ([email protected]) wrote this manual page.
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190 .SH SEE ALSO
821
f8b28a3de6cb Don't say "SSH 2" any more since protocol version 1 is irrelevant
Matt Johnston <matt@ucc.asn.au>
parents: 690
diff changeset
191 dropbearkey(1), dbclient(1), dropbearconvert(1)
128
a9dddd13c4ba Added dropbear.8 and dropbearkey.8 back in
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 .P
690
4b47ff154ff6 Document "-m" and "-c"
Matt Johnston <matt@ucc.asn.au>
parents: 576
diff changeset
193 https://matt.ucc.asn.au/dropbear/dropbear.html