iked(8) - f35

1IKED(8)                   BSD System Manager's Manual                  IKED(8)
2

NAME

4     iked — Internet Key Exchange version 2 (IKEv2) daemon
5

SYNOPSIS

7     iked [-dnSTtv] [-D macro=value] [-f file] [-p udpencap_port] [-s socket]
8

DESCRIPTION

10     iked is an Internet Key Exchange (IKEv2) daemon which performs mutual au‐
11     thentication and which establishes and maintains IPsec flows and security
12     associations (SAs) between the two peers.
13
14     The IKEv2 protocol is defined in RFC 7296, which combines and updates the
15     previous standards: ISAKMP/Oakley (RFC 2408), IKE (RFC 2409), and the In‐
16     ternet DOI (RFC 2407).  iked only supports the IKEv2 protocol; support
17     for ISAKMP/Oakley and IKEv1 is provided by isakmpd(8).
18
19     iked supports mutual authentication using RSA or ECDSA public keys and
20     X.509 certificates.  See the PUBLIC KEY AUTHENTICATION section below and
21     PKI AND CERTIFICATE AUTHORITY COMMANDS in ikectl(8) for more information
22     about creating and maintaining the public key infrastructure.
23
24     The options are as follows:
25
26     -D macro=value
27             Define macro to be set to value on the command line.  Overrides
28             the definition of macro in the configuration file.
29
30     -d      Do not daemonize and log to stderr.
31
32     -f file
33             Use file as the configuration file, instead of the default
34             /etc/iked.conf.
35
36     -n      Configtest mode.  Only check the configuration file for validity.
37
38     -p udpencap_port
39             Specify the listen port for encapsulated UDP that the daemon will
40             bind to as well as the UDP encapsulation port set in resulting
41             IPsec SAs.  In order to receive UDP encapsulated IPsec packets on
42             ports other than 4500, the net.inet.esp.udpencap_port sysctl(2)
43             variable has to be set accordingly.  Implies -t.
44
45     -S      Start iked in passive mode.  See the set passive option in
46             iked.conf(5) for more information.
47
48     -s socket
49             Use socket as the control socket, instead of the default
50             /var/run/iked.sock.
51
52     -T      Disable NAT-Traversal and do not propose NAT-Traversal support to
53             the peers.
54
55     -t      Enforce NAT-Traversal and only listen to NAT-Traversal messages.
56             This option is only recommended for testing; the default is to
57             negotiate NAT-Traversal with the peers.
58
59     -v      Produce more verbose output.
60

PUBLIC KEY AUTHENTICATION

62     It is possible to store trusted public keys to make them directly usable
63     by iked, bypassing the need to use certificates.  The keys should be
64     saved in PEM format (see openssl(1)) and named and stored as follows:
65
66        For IPv4 identities:    /etc/iked/pubkeys/ipv4/A.B.C.D
67        For IPv6 identities:    /etc/iked/pubkeys/ipv6/abcd:abcd::ab:bc
68        For FQDN identities:    /etc/iked/pubkeys/fqdn/foo.bar.org
69        For UFQDN identities:   /etc/iked/pubkeys/ufqdn/user@foo.bar.org
70
71     Depending on the srcid and dstid specifications in iked.conf(5), keys may
72     be named after their IPv4 address, IPv6 address, fully qualified domain
73     name (FQDN) or user fully qualified domain name (UFQDN).
74
75     For example, iked can authenticate using the pre-generated keys if the
76     local public key, by default /etc/iked/local.pub, is copied to the remote
77     gateway as /etc/iked/pubkeys/ipv4/local.gateway.ip.address and the remote
78     gateway's public key is copied to the local gateway as
79     /etc/iked/pubkeys/ipv4/remote.gateway.ip.address.  Of course, new keys
80     may also be generated (the user is not required to use the pre-generated
81     keys).  In this example, srcid and dstid would also have to be set to the
82     specified addresses in iked.conf(5).
83

FILES

85     /etc/iked.conf         The default iked configuration file.
86     /etc/iked/ca/          The directory where CA certificates are kept.
87     /etc/iked/certs/       The directory where IKE certificates are kept,
88                            both the local certificate(s) and those of the
89                            peers, if a choice to have them kept permanently
90                            has been made.
91     /etc/iked/crls/        The directory where CRLs are kept.
92     /etc/iked/private/     The directory where local private keys used for
93                            public key authentication are kept.  The file
94                            local.key is used to store the local private key.
95     /etc/iked/pubkeys/     The directory in which trusted public keys are
96                            kept.  The keys must be named in the fashion de‐
97                            scribed above.
98     /var/run/iked.sock     The default iked control socket.
99

STANDARDS

104     C. Kaufman, P. Hoffman, Y. Nir, P. Eronen, and T. Kivinen, Internet Key
105     Exchange Protocol Version 2 (IKEv2), RFC 7296, October 2014.
106

HISTORY

108     The iked program first appeared in OpenBSD 4.8.
109

AUTHORS

111     The iked program was written by Reyk Floeter <reyk@openbsd.org>.
112
113BSD                            November 20, 2020                           BSD