Mercurial > dropbear

annotate README @ 869:c63e7644db60

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Only define LTM_DESC if it isn't already
author Matt Johnston <matt@ucc.asn.au>
date Mon, 02 Dec 2013 22:15:17 +0800
parents f8b28a3de6cb
children 68e2a0f6c1ef
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
821
f8b28a3de6cb Don't say "SSH 2" any more since protocol version 1 is irrelevant
Matt Johnston <matt@ucc.asn.au>
parents: 717
diff changeset
1 This is Dropbear, a smallish SSH server and client.
701
20dafc77322e link to Dropbear webpage
Matt Johnston <matt@ucc.asn.au>
parents: 382
diff changeset
2 https://matt.ucc.asn.au/dropbear/dropbear.html
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
4 INSTALL has compilation instructions.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
5
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
6 MULTI has instructions on making a multi-purpose binary (ie a single binary
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
7 which performs multiple tasks, to save disk space)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
8
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 SMALL has some tips on creating small binaries.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
10
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
11 See TODO for a few of the things I know need looking at, and please contact
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12 me if you have any questions/bugs found/features/ideas/comments etc :)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 Matt Johnston
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
15 [email protected]
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17
75
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
18 In the absence of detailed documentation, some notes follow:
72
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
19 ============================================================================
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
20
90
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
21 Server public key auth:
72
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
22
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
23 You can use ~/.ssh/authorized_keys in the same way as with OpenSSH, just put
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
24 the key entries in that file. They should be of the form:
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
25
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
26 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAwVa6M6cGVmUcLl2cFzkxEoJd06Ub4bVDsYrWvXhvUV+ZAM9uGuewZBDoAqNKJxoIn0Hyd0Nk/yU99UVv6NWV/5YSHtnf35LKds56j7cuzoQpFIdjNwdxAN0PCET/MG8qyskG/2IE2DPNIaJ3Wy+Ws4IZEgdJgPlTYUBWWtCWOGc= someone@hostname
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
27
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
28 You must make sure that ~/.ssh, and the key file, are only writable by the
290
94ee16f5b8a8 0.48 progress
Matt Johnston <matt@ucc.asn.au>
parents: 161
diff changeset
29 user. Beware of editors that split the key into multiple lines.
72
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
30
717
74deece07742 update text about authorized_keys options
Matt Johnston <matt@ucc.asn.au>
parents: 701
diff changeset
31 Dropbear supports some options for authorized_keys entries, see the manpage.
72
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
32
75
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
33 ============================================================================
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
34
90
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
35 Client public key auth:
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
36
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
37 Dropbear can do public key auth as a client, but you will have to convert
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
38 OpenSSH style keys to Dropbear format, or use dropbearkey to create them.
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
39
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
40 If you have an OpenSSH-style private key ~/.ssh/id_rsa, you need to do:
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
41
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
42 dropbearconvert openssh dropbear ~/.ssh/id_rsa ~/.ssh/id_rsa.db
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
43 dbclient -i ~/.ssh/id_rsa.db <hostname>
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
44
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
45 Currently encrypted keys aren't supported, neither is agent forwarding. At some
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
46 stage both hopefully will be.
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
47
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
48 ============================================================================
c2ac796b130e merge of 00b67a11e33c3ed390556805ed6d1078528bee70
Matt Johnston <matt@ucc.asn.au>
parents: 75
diff changeset
49
75
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
50 If you want to get the public-key portion of a Dropbear private key, look at
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
51 dropbearkey's '-y' option.
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
52
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
53 ============================================================================
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
54
72
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
55 To run the server, you need to generate server keys, this is one-off:
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
56 ./dropbearkey -t rsa -f dropbear_rsa_host_key
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
57 ./dropbearkey -t dss -f dropbear_dss_host_key
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
58
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
59 or alternatively convert OpenSSH keys to Dropbear:
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
60 ./dropbearconvert openssh dropbear /etc/ssh/ssh_host_dsa_key dropbear_dss_host_key
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
61
75
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
62 ============================================================================
72
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
63
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
64 If the server is run as non-root, you most likely won't be able to allocate a
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
65 pty, and you cannot login as any user other than that running the daemon
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
66 (obviously). Shadow passwords will also be unusable as non-root.
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
67
75
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
68 ============================================================================
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
69
72
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
70 The Dropbear distribution includes a standalone version of OpenSSH's scp
9597c2e3b9d4 Some doc changes
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
71 program. You can compile it with "make scp", you may want to change the path
161
b9d3f725e00b 0.44 release changes
Matt Johnston <matt@ucc.asn.au>
parents: 90
diff changeset
72 of the ssh binary, specified by _PATH_SSH_PROGRAM in options.h . By default
75
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
73 the progress meter isn't compiled in to save space, you can enable it by
a54d20c96178 Some documentation touchups
Matt Johnston <matt@ucc.asn.au>
parents: 72
diff changeset
74 adding 'SCPPROGRESS=1' to the make commandline.