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Cache for DNS-Host definition

redhorse2017 over 15 years ago

Good morning,

I've got a problem with a DNS-Host definition:

For example, Host A has the hostname hosta.local with ip-adress 192.168.0.1 which is assigned by a windows dhcp server. Now, ASG doesn't recognize the change of the ip-adress to 192.168.0.2, the packet filter rule doesn't match, because hosta.local has still 192.168.0.1 in its definition on ASG.

Is it possible to update the dns-cache for the dns host definition in scheduler or something like that?

Kind regards
Christian

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0 BAlfson over 15 years ago

If I understand your question correctly, you should assign a fixed IP to Host A instead of letting it use DHCP.

Cheers - Bob

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0 BAlfson over 15 years ago

If I understand your question correctly, you should assign a fixed IP to Host A instead of letting it use DHCP.

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 UrsWeiss over 15 years ago in reply to BAlfson

Yes, fixed IP or static assigned DHCP address.

Anyone knows how long a "DNS Host" lookups are cached until it is renewed by the ASG?
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0 BarryG over 15 years ago in reply to UrsWeiss

Anyone knows how long a "DNS Host" lookups are cached until it is renewed by the ASG?

iirc, 2 hours. but that may have changed.

Barry
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