An employee was able to access the network through Cisco VPN client yesterday. Today he cannot--the authentication box does not show up. The client 'connection' entry was deleted and reconfigured, still can not access the ASA firewall. Other clients are able to access the ASA. XP firewall is off on client's machine.
Last night the IPS showed the above client with alert: Invalid Netbios Name id=3357. The employee ran a virus check-nothing found. Any suggestions on throubleshooting the VPN connection?
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...