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Sounds like its this client though, because no other clients have this issue(correct), it could be anywhere in his infrastructure from the time it is created to the time it gets routed to you.<br />
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harbor235 ;}
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Sounds like its this client though, because no other clients have this issue(correct), it could be anywhere in his infrastructure from the time it is created to the time it gets routed to you.

harbor235 ;}

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I have an IPSEC VPN set up on an ASA 5520. I have a few clients on it for testing purposes. All clients are working fine, except one that I keep receiving this message for:<br />
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IPSEC: Received an ESP packet (SPI= 0xA71AC130, sequence number= 0xB2C57) from (his external IP)(user= XXX) to (our ext. IP) that failed authentication.<br />
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I get the error in ~20 second intervals. He is passing traffic and not noticiing any problems, but this error is annoying. Any idea what is going on?
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I have an IPSEC VPN set up on an ASA 5520. I have a few clients on it for testing purposes. All clients are working fine, except one that I keep receiving this message for:

IPSEC: Received an ESP packet (SPI= 0xA71AC130, sequence number= 0xB2C57) from (his external IP)(user= XXX) to (our ext. IP) that failed authentication.

I get the error in ~20 second intervals. He is passing traffic and not noticiing any problems, but this error is annoying. Any idea what is going on?

Receiving EST packet failed authentication error for only one client

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Internet Protocol Security (IPsec) is a protocol suite for secure Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session. IPsec includes protocols for establishing mutual authentication between agents at the beginning of the session and negotiation of cryptographic keys to be used during the session. IPsec can be used in protecting data flows between a pair of hosts (host-to-host), between a pair of security gateways (network-to-network), or between a security gateway and a host (network-to-host). IPsec is an end-to-end security scheme operating in the Internet Layer of the Internet Protocol Suite.