I recently setup a PIX 515 for a customer on a DSL line. Their e-mail is hosted by someone other than their ISP. Internet browsing is fine but when they try to access e-mail, there is a 20 - 30 second delay before the mail is displayed. I tested the PIX using a mailbox with their ISP, no delay. The customer wants to return the PIX. The PIX is setup for 3DES VPN, PAT translation with approximately 6 ports being redirected on the LAN. Prior to the PIX installation, they had a 910 Netopia using NAT. They experienced no delays. Any help appreciated.
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...