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AnyConnect VPN - macOS - dynamic DNS registration

cscherb
Level 1
Level 1

‎03-08-2022 07:44 AM - edited ‎03-08-2022 07:50 AM

When running AnyConnect VPN on macOS, both IP addresses (VPN and physical) are registered in Windows DNS (RFC 2136) after establishing the VPN tunnel - doing the same with Windows clients just the IP address assigned to the VPN adapter is registered in DNS. Any idea how to prevent macOS from registering IP address of physical NIC in DNS when doing VPN ?

3 Replies 3

giovanni.augusto
Level 1
Level 1

‎03-08-2022 09:12 AM

Hi,

 

Are you using a local pool on the ASA/FTD or  are you directing the IP address least to a DHCP server?

 

in case if local pool can you show the relevant config to update the DNS entry?

cscherb
Level 1
Level 1
In response to giovanni.augusto

‎03-08-2022 11:06 AM

I'm using a local pool on ASA.

I tried to use DHCP but this makes no difference to the client - the ASA is requesting the IPs from DHCP but hand out them to AnyConnect client the same way. Windows says in "ipconfig /all"in both cases "DHCP enabled: no".

 

giovanni.augusto
Level 1
Level 1
In response to cscherb

‎03-08-2022 12:38 PM

Do you mind sharing your (sanitized) config?

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