Static DNS entries

RouterOS General
1

Hi all,
I’m having trouble with my first MikroTik.
I’ve read some basic docuemnts in the wiki and some threads on the forum but I’m confused about this problem.
I want to configure the DNS server so the LAN PCs could:

a. resolve IP addresses outside the LAN with static hostnames
b. resolve the LAN PCs IP addresses with the relative hostnames

I’ve setup the DHCP server with the MikroTik IP address as DNS server for the LAN PCs.
I’ve setup the DNS in the MikroTik with the Google DNS servers and I added two static DNS entries to test point a. and b.

I’m not able to make it works.

Any suggestion?

Thank you.

2

check the ip, routes, for proper gateway. I’ve had this issue and sometime the router will add a default that is not the preferred.

3

I’ve checked the ip routes and it’s all ok:

ether4 → LAN: 192.168.100.x
ether2 → WAN: DHCP Client with IP 192.168.0.x and route Dst. Address 0.0.0.0/0, Gateway: 192.168.0.1

Other suggestions?

4

Static local & external DNS works fine for me, here is my config

# jan/28/2015 13:28:50 by RouterOS 6.15
# software id = Q19U-9W6Z
#
/ip dns
set allow-remote-requests=yes 
/ip dns static
add address=10.1.10.1 name=local.nas
add address=159.148.147.196 name=www.babayaga.dumb
[ben@ECH_CT04] > ping local.nas
HOST                                     SIZE TTL TIME  STATUS                                                                                   
10.1.10.1                                  56  64 0ms  
    sent=1 received=1 packet-loss=0% min-rtt=0ms avg-rtt=0ms max-rtt=0ms 

[ben@ECH_CT04] > ping www.babayaga.dumb
HOST                                     SIZE TTL TIME  STATUS                                                                                   
159.148.147.196                            56  55 107ms
    sent=1 received=1 packet-loss=0% min-rtt=107ms avg-rtt=107ms max-rtt=107ms 

[ben@ECH_CT04] >
5

That’s the excatly configuration I have and it works from the routerboard itself.

It doesn’t work from PC client both with static IP (with IP of the routerboard as DNS server) or dynamic IP via DHCP.

6

Then it means that your computer does not ask for Mikrotik as first DNS.
Have you checked that you don’t block by mistake the MT DNS port (53/udp)?
Have you checked that MT DNS is first on the DNS list of client computer, or that MT is the only DNS on the computer?
Have you done a traceroute from the client computer to check where the request goes?

7

Thank you for the reply.

Do you mean in the firewall?
I’ve addes this lines:
/ip firewall filter
add chain=input protocol=udp dst-portaction=53 accept comment=“DNS-UDP”
add chain=input protocol=tcp dst-portaction=53 action=accept comment=“DNS-TCP”

Yes, it’s the first and the only one.

Yes: nslookup -debug hostname stops at routerboard IP address with nothing more.

8

can you ping the hosts (with IP) from the client computer?