Thursday, March 21, 2019

RDP Dropping over IPSec Tunnel, Cisco ASA over LTE Modem

Having an issue getting a new site turned up. We don't have a physical circuit yet (and wont for a few months) but we have a Verizon LTE modem we can use for our WAN for the time being. The issue is RDP traffic drops after a few minutes and takes upwards of 30 seconds to re-establish the connection, works for a few minutes, then repeats this cycle. Everything (internet, file shares, ping, etc) else works fine. We have a request into TAC for assistance, but they haven't been much help up to this point.

Also worth adding that if we connect a laptop up to the LTE modem and connect to our Juniper VPN, RDP works fine. We are on the latest ASA software. We dropped MTU on the ASA to 1400 per recommendation of an associate of ours since the LTE adds some overhead to the frames, so don know if that could impact this.

Any help is appreciated. Thanks.



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