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To avoid this, you should use TSIG signatures - a method of cryptographically signing updates using a shared secret key.As long as you protect the secrecy of this key, your updates should also be secure. The DHCP issues the ip address with the SLP info and updates the DNS/DDNS info.All good :) I have set up a Suse 10 sp1 with OES 2 sp1b and configured the DNS and DHCP.I have a small network setup and I cannot get DNS to work.DHCP is functioning normal and working fine but it cannot update the DNS pointers for some reason. ----------------------- ddns-updates on; ddns-domainname "mydomain.lan"; ddns-update-style ad-hoc; allow unknown-clients; option domain-name "mydomain.lan"; option domain-name-servers 192.168.0.1, 4.2.2.4; option routers 192.168.0.1; option ntp-servers gov; option netbios-name-servers 192.168.0.1; option netbios-dd-server 192.168.0.1; option netbios-node-type 8; authoritative; default-lease-time 172800; subnet 192.168.0.0 netmask 255.255.255.0 Jul 22 NIKKI named[3336]: the working directory is not writable Aug 11 NIKKI dhcpd: if The Beast.IN A rrset doesn't exist add The Beast.86400 IN A 192.168.0.210: timed out.-f /etc/dhcp/dhcpduser.keytab ]; then echo "Required keytab /etc/dhcpduser.keytab not found, it needs to be created." echo "Use the following commands as root" echo "samba-tool domain exportkeytab --principal=$ /etc/dhcpduser.keytab" echo "chown XXXX: XXXX /etc/dhcpduser.keytab" echo "Replace 'XXXX: XXXX' with the user & group that dhcpd runs as on your distro" echo "chmod 400 /etc/dhcpduser.keytab" exit 1 fi # Variables supplied by action=

To avoid this, you should use TSIG signatures - a method of cryptographically signing updates using a shared secret key.As long as you protect the secrecy of this key, your updates should also be secure. The DHCP issues the ip address with the SLP info and updates the DNS/DDNS info.All good :) I have set up a Suse 10 sp1 with OES 2 sp1b and configured the DNS and DHCP.I have a small network setup and I cannot get DNS to work.DHCP is functioning normal and working fine but it cannot update the DNS pointers for some reason. ----------------------- ddns-updates on; ddns-domainname "mydomain.lan"; ddns-update-style ad-hoc; allow unknown-clients; option domain-name "mydomain.lan"; option domain-name-servers 192.168.0.1, 4.2.2.4; option routers 192.168.0.1; option ntp-servers gov; option netbios-name-servers 192.168.0.1; option netbios-dd-server 192.168.0.1; option netbios-node-type 8; authoritative; default-lease-time 172800; subnet 192.168.0.0 netmask 255.255.255.0 Jul 22 NIKKI named[3336]: the working directory is not writable Aug 11 NIKKI dhcpd: if The Beast.IN A rrset doesn't exist add The Beast.86400 IN A 192.168.0.210: timed out.-f /etc/dhcp/dhcpduser.keytab ]; then echo "Required keytab /etc/dhcpduser.keytab not found, it needs to be created." echo "Use the following commands as root" echo "samba-tool domain exportkeytab --principal=$ /etc/dhcpduser.keytab" echo "chown XXXX: XXXX /etc/dhcpduser.keytab" echo "Replace 'XXXX: XXXX' with the user & group that dhcpd runs as on your distro" echo "chmod 400 /etc/dhcpduser.keytab" exit 1 fi # Variables supplied by action=$1 ip=$2 DHCID=$3 name=$ usage() _KERBEROS () # Exit if no ip address or mac-address if [ -z "$" ] || [ -z "$" ]; then usage exit 1 fi # Exit if no computer name supplied, unless the action is 'delete' if [ "$" = "" ]; then if [ "$" = "delete" ]; then name=$(host -t PTR "$" | awk '' | awk -F '.' '') else usage exit 1; fi fi # Set PTR address ptr=$(echo $ | awk -F '.' '') ## nsupdate ## case "$" in add) _KERBEROS nsupdate -g $ Start the dhcp server and see what happens, don't forget to stop your windows clients trying to update their own records, as this will fail.Add the following to the /etc/dhcp/file on the primary: Replace PUT_YOUR_KEY_HERE with the key you extracted from the private key created by the dnssec command Restart both servers to apply the configuration changes.

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To avoid this, you should use TSIG signatures - a method of cryptographically signing updates using a shared secret key.

As long as you protect the secrecy of this key, your updates should also be secure.

The DHCP issues the ip address with the SLP info and updates the DNS/DDNS info.

All good :) I have set up a Suse 10 sp1 with OES 2 sp1b and configured the DNS and DHCP.

I have a small network setup and I cannot get DNS to work.

DHCP is functioning normal and working fine but it cannot update the DNS pointers for some reason. ----------------------- ddns-updates on; ddns-domainname "mydomain.lan"; ddns-update-style ad-hoc; allow unknown-clients; option domain-name "mydomain.lan"; option domain-name-servers 192.168.0.1, 4.2.2.4; option routers 192.168.0.1; option ntp-servers gov; option netbios-name-servers 192.168.0.1; option netbios-dd-server 192.168.0.1; option netbios-node-type 8; authoritative; default-lease-time 172800; subnet 192.168.0.0 netmask 255.255.255.0 Jul 22 NIKKI named[3336]: the working directory is not writable Aug 11 NIKKI dhcpd: if The Beast.IN A rrset doesn't exist add The Beast.86400 IN A 192.168.0.210: timed out.

-f /etc/dhcp/dhcpduser.keytab ]; then echo "Required keytab /etc/dhcpduser.keytab not found, it needs to be created." echo "Use the following commands as root" echo "samba-tool domain exportkeytab --principal=$ /etc/dhcpduser.keytab" echo "chown XXXX: XXXX /etc/dhcpduser.keytab" echo "Replace 'XXXX: XXXX' with the user & group that dhcpd runs as on your distro" echo "chmod 400 /etc/dhcpduser.keytab" exit 1 fi # Variables supplied by action=$1 ip=$2 DHCID=$3 name=$ usage() _KERBEROS () # Exit if no ip address or mac-address if [ -z "$" ] || [ -z "$" ]; then usage exit 1 fi # Exit if no computer name supplied, unless the action is 'delete' if [ "$" = "" ]; then if [ "$" = "delete" ]; then name=$(host -t PTR "$" | awk '' | awk -F '.' '') else usage exit 1; fi fi # Set PTR address ptr=$(echo $ | awk -F '.' '') ## nsupdate ## case "$" in add) _KERBEROS nsupdate -g $ Start the dhcp server and see what happens, don't forget to stop your windows clients trying to update their own records, as this will fail.

Add the following to the /etc/dhcp/file on the primary: Replace PUT_YOUR_KEY_HERE with the key you extracted from the private key created by the dnssec command Restart both servers to apply the configuration changes.

ip= DHCID= name=$ usage() _KERBEROS () # Exit if no ip address or mac-address if [ -z "$" ]

As this How To is based on a Debian OS install, the paths given may be different if you use another OS. /bin/bash # /etc/bin/# This script is for secure DDNS updates on Samba 4 # Version: 0.8.8 # DNS domain domain=$(hostname -d) if [ -z $ ]; then echo "Cannot obtain domain name, is DNS set up correctly? Exiting." logger "Cannot obtain domain name, is DNS set up correctly? Exiting." exit 1 fi # Samba 4 realm REALM=$(echo $) # Additional nsupdate flags (-g already applied), e.g.In the DHCP server interface, I can see that the hostname of the client is properly being displayed, so I know the client is properly sending the hostname back.However, the DNS servers do not seem to be able to resolve the address.You should find lines similar to these, in the system logs on both machines: If OMAPI is working properly you can test failover by stopping the primary server.If you are using a firewall, you will need to open TCP ports 6 Once you are sure everything is working as expected, restart both servers to ensure everything is running correctly.

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