Mercurial > dropbear

comparison README @ 285:1b9e69c058d2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3) to branch 'au.asn.ucc.matt.dropbear' (head fdf4a7a3b97ae5046139915de7e40399cceb2c01)
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 Mar 2006 13:23:58 +0000
parents b9d3f725e00b
children 94ee16f5b8a8
comparison
equal deleted inserted replaced
281:997e6f7dc01e 285:1b9e69c058d2
1 This is Dropbear, a smallish SSH 2 server and client.
2
3 INSTALL has compilation instructions.
4
5 MULTI has instructions on making a multi-purpose binary (ie a single binary
6 which performs multiple tasks, to save disk space)
7
8 SMALL has some tips on creating small binaries.
9
10 See TODO for a few of the things I know need looking at, and please contact
11 me if you have any questions/bugs found/features/ideas/comments etc :)
12
13 Matt Johnston
14 [email protected]
15
16
17 In the absence of detailed documentation, some notes follow:
18 ============================================================================
19
20 Server public key auth:
21
22 You can use ~/.ssh/authorized_keys in the same way as with OpenSSH, just put
23 the key entries in that file. They should be of the form:
24
25 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAwVa6M6cGVmUcLl2cFzkxEoJd06Ub4bVDsYrWvXhvUV+ZAM9uGuewZBDoAqNKJxoIn0Hyd0Nk/yU99UVv6NWV/5YSHtnf35LKds56j7cuzoQpFIdjNwdxAN0PCET/MG8qyskG/2IE2DPNIaJ3Wy+Ws4IZEgdJgPlTYUBWWtCWOGc= someone@hostname
26
27 You must make sure that ~/.ssh, and the key file, are only writable by the
28 user.
29
30 NOTE: Dropbear ignores authorized_keys options such as those described in the
31 OpenSSH sshd manpage, and will not allow a login for these keys.
32
33 ============================================================================
34
35 Client public key auth:
36
37 Dropbear can do public key auth as a client, but you will have to convert
38 OpenSSH style keys to Dropbear format, or use dropbearkey to create them.
39
40 If you have an OpenSSH-style private key ~/.ssh/id_rsa, you need to do:
41
42 dropbearconvert openssh dropbear ~/.ssh/id_rsa ~/.ssh/id_rsa.db
43 dbclient -i ~/.ssh/id_rsa.db <hostname>
44
45 Currently encrypted keys aren't supported, neither is agent forwarding. At some
46 stage both hopefully will be.
47
48 ============================================================================
49
50 If you want to get the public-key portion of a Dropbear private key, look at
51 dropbearkey's '-y' option.
52
53 ============================================================================
54
55 To run the server, you need to generate server keys, this is one-off:
56 ./dropbearkey -t rsa -f dropbear_rsa_host_key
57 ./dropbearkey -t dss -f dropbear_dss_host_key
58
59 or alternatively convert OpenSSH keys to Dropbear:
60 ./dropbearconvert openssh dropbear /etc/ssh/ssh_host_dsa_key dropbear_dss_host_key
61
62 ============================================================================
63
64 If the server is run as non-root, you most likely won't be able to allocate a
65 pty, and you cannot login as any user other than that running the daemon
66 (obviously). Shadow passwords will also be unusable as non-root.
67
68 ============================================================================
69
70 The Dropbear distribution includes a standalone version of OpenSSH's scp
71 program. You can compile it with "make scp", you may want to change the path
72 of the ssh binary, specified by _PATH_SSH_PROGRAM in options.h . By default
73 the progress meter isn't compiled in to save space, you can enable it by
74 adding 'SCPPROGRESS=1' to the make commandline.