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Beginner Setup - Hostnames rather than IP's

Quite new to having a hardware firewall (running UTM Home edition) - literally second day of having the box on the network after several nightmares with NIC's.

I've read the instructions on the Sophos website with regard to DNS BP's - and it talks about how to go about setting things up so the hostnames show rather than IP's - https://www.sophos.com/en-us/support/knowledgebase/120283.aspx

I'm not a complete novice with this kinda stuff - but PTR's - errrrrm

I've set the UTM to be the main router (and DNS - so in the DNS list, it has a Level3 one, a Plusnet one and itself at 192.168.1.1). How would I set it up? I have no AD DNS's or anything like that. How would the PTR work? (Address range is 192.168.1.1-192.168.1.254

Might be a silly question, I am aware

Cheers!

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0 BAlfson over 8 years ago

Hi, Aman, and welcome to the UTM Community!

That article was copied two years ago from a post I maintain here, so I don't know if the plagiarist has updated his stuff to reflect the changes made in my post. Please review DNS Best Practice and say what is different in your setup.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 AmanHalai over 8 years ago in reply to BAlfson

Hi Bob,

I don't have an internal DNS server (was planning to have UTM box be centrally managing network).

Am I right in assuming UTM does not have a full DNS server? - ref to http://feature.astaro.com/forums/17359-utm-formerly-asg-feature-requests/suggestions/203286-networking-full-dns-server

Cheers, Aman
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0 BAlfson over 8 years ago in reply to AmanHalai

To accomplish what you want in WebAdmin, just create a Host definition for each numeric IP you would like to identify.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 AmanHalai over 8 years ago in reply to BAlfson

Tried doing this (even ticked Reverse DNS) but it doesn't seem to be working. One of the servers on the LAN is called 'datacentre' and is at 192.168.1.100. I can't access it at all using \\datacentre or datacentre on RDP.

Attached is the screengrab. Any ideas?
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0 BAlfson over 8 years ago in reply to AmanHalai

Ahah! I thought this was a question about seeing names in reports instead of IPs!

Your DHCP server must assign the local domain for that to work. Your Host definition must include the full Hostname, datacentre.domain.tld.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 AmanHalai over 8 years ago in reply to BAlfson

At risk of sounding VERY stupid, I haven't actually got another DHCP server on the network, or any sort of AD running. Previous to the UTM going in, a Netgear router used to handle DHCP. I am assuming that the UTM doesn't come with full internal DHCP features hence needs something like a DHCP server provided by Windows Server or something?
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0 BAlfson over 8 years ago in reply to AmanHalai

The UTM's DHCP server does indeed do this. Just fill in 'Domain' with domain.tld.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 AmanHalai over 8 years ago in reply to BAlfson

Progress! The UTM is now listing hostnames in reports. Screenshot attached.

But, I still cannot get reverse DNS working. At all. Following your DNS Best Practice post but no ball. Screenshots attached. What may be wrong with this setup? (UTM IP address is 192.168.1.1)
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0 BAlfson over 8 years ago in reply to AmanHalai

Disable/delete your two Request Routes and remove the IP of "Internal (Address)" from 'Forwarders' and then try again. By the way, the 'IPv4 Leases' tab shows the name of the devices.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 AmanHalai over 8 years ago in reply to BAlfson

Still not working. Is it worth resetting the UTM and trying again do you think?
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