We have two Cisco VPN Concentrators 3005 (version 4.7.1) setup as load balancing. When we add groups, we got the email notification on the Secondary VPN Concentrator: "Unable to accept connection: no sockets available for task". We have about 18 groups on the secondary VPN Concentrator. We don't get the error message on the Primary VPN Concentrator. Do you have any suggestions? Thanks.
The error indicates that the concentrator has run out of UPD Sockets . In total there are only 64 Auth sockets available on the VPN Concentrator, which includes the group and globally assigned authentication servers. Workaround is to reduce the number of Authentication servers. Try assigning authentication servers globally instead of per group.
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...