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Low throughput with ipsec in LAN

Hello everybody

I've a problem with a ipsec connection between a ASA 5505 and the Cisco VPN client 5.

There are many tcp dup ack and lost segments wich indicate the out-of-order segments as i think.

This will obviously slow down the througput dramaticaly to aprox. 1 - 2 Mbit/s.

The attached file is a test TCP stream made with jperf from the vpn client (81.1.10.11, virtual vpn adapter) to the asa over a 100MBit LAN captured on the server side (192.168.101.190)

Thanks for any help.

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