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Index:
  IPXrouted(8)
  MAKEDEV(8)
  ac(8)
  accton(8)
  acpiconf(8)
  acpidb(8)
  acpidump(8)
  adding_user(8)
  adduser(8)
  adjkerntz(8)
  amd(8)
  amq(8)
  ancontrol(8)
  apm(8)
  apmconf(8)
  apmd(8)
  arlcontrol(8)
  arp(8)
  asf(8)
  atacontrol(8)
  atm(8)
  atmarpd(8)
  atmconfig(8)
  atrun(8)
  authpf(8)
  badsect(8)
  bcmfw(8)
  boot(8)
  boot0cfg(8)
  boot_i386(8)
  bootparamd(8)
  bootpd(8)
  bootpef(8)
  bootpgw(8)
  bootptest(8)
  bsdlabel(8)
  bt3cfw(8)
  btxld(8)
  burncd(8)
  camcontrol(8)
  catman.local(8)
  ccdconfig(8)
  chat(8)
  chkgrp(8)
  chkprintcap(8)
  chown(8)
  chroot(8)
  clri(8)
  comcontrol(8)
  comsat(8)
  config(8)
  conscontrol(8)
  crash(8)
  cron(8)
  cvsbug(8)
  daemon(8)
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  devd(8)
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  dump(8)
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  editmap(8)
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  faithd(8)
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  fore_dnld(8)
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  fsck_4.2bsd(8)
  fsck_ffs(8)
  fsck_msdosfs(8)
  fsck_ufs(8)
  fsdb(8)
  fsinfo(8)
  fsirand(8)
  ftp-proxy(8)
  ftpd(8)
  fwcontrol(8)
  gbde(8)
  gconcat(8)
  geom(8)
  getextattr(8)
  getfmac(8)
  getpmac(8)
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  halt(8)
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  ip6addrctl(8)
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  kadmin(8)
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  kdc(8)
  kerberos(8)
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  kldconfig(8)
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  loader.4th(8)
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  mount(8)
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  mount_linprocfs(8)
  mount_mfs(8)
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  mount_nfs(8)
  mount_nfs4(8)
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  mount_nullfs(8)
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  mount_procfs(8)
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  mount_umapfs(8)
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  mountd(8)
  moused(8)
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  mtree(8)
  named-checkconf(8)
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  named.reconfig(8)
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  natd(8)
  ndiscvt(8)
  ndp(8)
  newfs(8)
  newfs_msdos(8)
  newkey(8)
  newsyslog(8)
  nextboot(8)
  nfsd(8)
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  ngctl(8)
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  nis(8)
  nologin(8)
  nos-tun(8)
  nsupdate(8)
  ntpd(8)
  ntpdate(8)
  ntpdc(8)
  ntpq(8)
  ntptime(8)
  ntptrace(8)
  pac(8)
  pam_chroot(8)
  pam_deny(8)
  pam_echo(8)
  pam_exec(8)
  pam_ftpusers(8)
  pam_group(8)
  pam_guest(8)
  pam_krb5(8)
  pam_ksu(8)
  pam_lastlog(8)
  pam_login_access(8)
  pam_nologin(8)
  pam_opie(8)
  pam_opieaccess(8)
  pam_passwdqc(8)
  pam_permit(8)
  pam_radius(8)
  pam_rhosts(8)
  pam_rootok(8)
  pam_securetty(8)
  pam_self(8)
  pam_ssh(8)
  pam_tacplus(8)
  pam_unix(8)
  pccardc(8)
  pccardd(8)
  pciconf(8)
  periodic(8)
  pfctl(8)
  pflogd(8)
  picobsd(8)
  ping(8)
  ping6(8)
  pnpinfo(8)
  ppp(8)
  pppctl(8)
  pppd(8)
  pppoed(8)
  pppstats(8)
  praliases(8)
  procctl(8)
  pstat(8)
  pw(8)
  pwd_mkdb(8)
  pxeboot(8)
  quot(8)
  quotacheck(8)
  quotaoff(8)
  quotaon(8)
  rarpd(8)
  raycontrol(8)
  rbootd(8)
  rc(8)
  rc.atm(8)
  rc.d(8)
  rc.early(8)
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  rc.shutdown(8)
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  rdump(8)
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  renice(8)
  repquota(8)
  rescue(8)
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  revnetgroup(8)
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  rfcomm_pppd(8)
  rip6query(8)
  rlogind(8)
  rmail(8)
  rmextattr(8)
  rmt(8)
  rmuser(8)
  rndc-confgen(8)
  rndc(8)
  route(8)
  route6d(8)
  routed(8)
  rpc.lockd(8)
  rpc.rquotad(8)
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  rpc.umntall(8)
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  rpc.ypxfrd(8)
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  zzz(8)

kdc(8)

NAME

     kdc -- Kerberos 5 server


SYNOPSIS

     kdc [-c file | --config-file=file] [-p | --no-require-preauth]
	 [--max-request=size] [-H | --enable-http] [--no-524] [--kerberos4]
	 [--kerberos4-cross-realm] [-r string | --v4-realm=string]
	 [-K | --kaserver] [-P portspec | --ports=portspec] [--detach]
	 [--addresses=list of addresses]


DESCRIPTION

     kdc serves requests for tickets.  When it starts, it first checks the
     flags passed, any options that are not specified with a command line flag
     are taken from a config file, or from a default compiled-in value.

     Options supported:

     -c file, --config-file=file
	     Specifies the location of the config file, the default is
	     /var/heimdal/kdc.conf.  This is the only value that can't be
	     specified in the config file.

     -p, --no-require-preauth
	     Turn off the requirement for pre-autentication in the initial AS-
	     REQ for all principals.  The use of pre-authentication makes it
	     more difficult to do offline password attacks.  You might want to
	     turn it off if you have clients that don't support pre-authenti-
	     cation.  Since the version 4 protocol doesn't support any pre-
	     authentication, serving version 4 clients is just about the same
	     as not requiring pre-athentication.  The default is to require
	     pre-authentication.  Adding the require-preauth per principal is
	     a more flexible way of handling this.

     --max-request=size
	     Gives an upper limit on the size of the requests that the kdc is
	     willing to handle.

     -H, --enable-http
	     Makes the kdc listen on port 80 and handle requests encapsulated
	     in HTTP.

     --no-524
	     don't respond to 524 requests

     --kerberos4
	     respond to Kerberos 4 requests

     --kerberos4-cross-realm
	     respond to Kerberos 4 requests from foreign realms.  This is a
	     known security hole and should not be enabled unless you under-
	     stand the consequences and are willing to live with them.

     -r string, --v4-realm=string
	     What realm this server should act as when dealing with version 4
	     requests.	The database can contain any number of realms, but
	     since the version 4 protocol doesn't contain a realm for the
	     server, it must be explicitly specified.  The default is whatever
	     as a white-space separated list of services or port numbers.

     --addresses=list of addresses
	     The list of addresses to listen for requests on.  By default, the
	     kdc will listen on all the locally configured addresses.  If only
	     a subset is desired, or the automatic detection fails, this
	     option might be used.

     All activities are logged to one or more destinations, see krb5.conf(5),
     and krb5_openlog(3).  The entity used for logging is kdc.


CONFIGURATION FILE

     The configuration file has the same syntax as krb5.conf(5), but will be
     read before /etc/krb5.conf, so it may override settings found there.
     Options specific to the KDC only are found in the ``[kdc]'' section.  All
     the command-line options can preferably be added in the configuration
     file.  The only difference is the pre-authentication flag, which has to
     be specified as:

	   require-preauth = no

     (in fact you can specify the option as --require-preauth=no).

     And there are some configuration options which do not have command-line
     equivalents:

	   check-ticket-addresses = boolean
		Check the addresses in the ticket when processing TGS
		requests.  The default is FALSE.

	   allow-null-ticket-addresses = boolean
		Permit tickets with no addresses.  This option is only rele-
		vant when check-ticket-addresses is TRUE.

	   allow-anonymous = boolean
		Permit anonymous tickets with no addresses.

	   enforce-transited-policy = boolean
		Always verify the transited policy, ignoring the
		disable-transited-check flag if set in the KDC client request.

	   encode_as_rep_as_tgs_rep = boolean
		Encode AS-Rep as TGS-Rep to be bug-compatible with old DCE
		code.  The Heimdal clients allow both.

	   kdc_warn_pwexpire = time
		How long before password/principal expiration the KDC should
		start sending out warning messages.

     The configuration file is only read when the kdc is started.  If changes
     made to the configuration file are to take effect, the kdc needs to be
     restarted.

     An example of a config file:

	   [kdc]
		   require-preauth = no
		   v4-realm = FOO.SE
     tion require that you add and remove addresses, the best option is proba-
     bly to listen to a wildcarded TCP socket, and make sure your clients use
     TCP to connect.  For instance, this will listen to IPv4 TCP port 88 only:

	   kdc --addresses=0.0.0.0 --ports="88/tcp"

     There should be a way to specify protocol, port, and address triplets,
     not just addresses and protocol, port tuples.


SEE ALSO

     kinit(1), krb5.conf(5)

HEIMDAL 		       October 21, 2003 		       HEIMDAL

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