Mediaflux: service to resolve DNS SRV record

ldap

server.dns.lookup :type SRV :target _ldap._tcp.domain.com

Kerberos

server.dns.lookup :type SRV :target _kerberos._tcp.domain.com

Enable DNS cache for Java applications

To enable DNS cache, there are two options:

• Enable Java in-memory DNS cache by setting JVM security property: networkaddress.cache.ttl to a positive integer (of seconds).
• Enable operating system's DNS cache (and no change to Java security property. networkaddress.cache.ttl=-1 by default).

See also:

• Java Network Properties
• Setting the JVM TTL for DNS Name Lookups

Get LDAP/AD hosts from SRV record by doing DNS lookup

nslookup -type=SRV _ldap._tcp.yourdomain.org
nslookup -type=SRV _ldap._tcp.dc._msdcs.yourdomain.org
nslookup -type=SRV _gc._tcp.yourdomain.org
nslookup -type=SRV _ldap._tcp.gc._msdcs.yourdomain.org

See also

• Microsoft Doc about Active Directory Server SRV records

Free DNS services

• http://freedns.afraid.org 
• http://zoneedit.com 
• http://dns.he.net

ip checking services for ddclient

• http://ip1.dynupdate.no-io.com:
  
  
  • ddclient configuration:

    use=web, web=ip1.dynupdate.no-io.com/

• http://checkip.dyndns.com/:
  
  
  • ddclient configuration:

    use=web, web=checkip.dyndns.com/, web-skip='Current IP Address: '

• http://whatismyip.org/
  • ddclient configuration:

    use=web, web=whatismyip.org/, web-skip='Your Ip Address:'

Free Dynamic DNS Updaters

• ddclient
  DDclient is a Perl client used to update dynamic DNS entries for accounts on Dynamic DNS Network Services' free DNS service.

SEE ALSO:

• IP Checking Services for ddclient

Free Dynamic DNS Service Providers

1. http://www.no-ip.com
2. http://www.dnsdynamic.org
3. http://www.changeip.com/
4. http://freedns.afraid.org/  
5. http://www.opendns.com/

SEE ALSO

• Dynamic DNS updaters