Slower Internet speeds in a VPN

I installed a new ASA 5510 on our internal network as an endpoint for our VPN connections. This ASA replaces the endpoint of the VPN on our ASA outdoors. I installed a VPN group profile and activated DTLS on the interface on the ASA. The only interface on the ASA's inside interface. We did tests of speed while on the VPN of two devices. When tests connection to VPN on the ASA outside speed show download speeds between 5 to 8 Mbps and upload of. 80-. 96 Mbit/s. When connecting to the VPN inside ASA speed tests show between 2 and 3 Mbps et.76 Mbps download speeds. When I run the command 'show svc web-session' on two cases that I see that the connection from the firewall to the outside indicates that the protocol used is DTLS however inside it does not DTLS.

I think part of the problem is that DTLS is not used. What can I do to improve my download speed? The ASA will use DTLS if the interface that is used is the inside interface?

Thank you.

Hello

DTLS uses UDP 443 while TLS is TCP 443.

and if DTLS is blocked somewhere, then the tunnel you will return to the TLS, but you must use DTLS since that it provides (the old comparassion TCP VS UDP) performance.

Please check if the path between the customer inside the interface does not block the UDP 443.

HTH

Mohammad.

Tags: Cisco Security

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