What's the impact of DNS settings in General SSL VPN settings

Question

Hi, 
 I've deployed doznes of SSL VPN clients, having DNS set to on-premises AD LAN DNS server 10.1.1.10 in General SSL VPN settings for all clients. Now when client with laptop connects to SSL VPN, I can see his/her default DNS resolving goes through VPN tunnel, while traffic does not (because it is NOT set as default gateway). I wanna know what's the impact of such setting? 
 Is it wise to have DNS setup under SSL VPN for all clients? I guess this might not be best practice, because: 
 
 DNS queries might take longer 
 our company AD DNS is under more pressure 
 
 But this might be unsignificant. What do you think? Good or bad practice?

Vivek Jagad · Answer

Hi Andrej Pirman , Thank you for reaching out to the community, having DNS settings strictly depends on the requirernemnt it is not a mandatory config for the global SSL VPN settings. 
 So, no it is not necessary to configure DNS settings specifically for SSL VPN settings. However, proper configuration of DNS settings is important for the overall functionality and security of the network on which SSL VPN is being used. DNS settings are used to map domain names to IP addresses, allowing users to access resources on the network by typing in a familiar web address. Proper DNS configuration can help ensure that users are able to securely and efficiently access resources through the SSL VPN.