There is not an entry in the ARP table. Two things to try. From the ASA can you try and ping ISPGateway and then immediately show arp and see if there is an entry? If there is not, is there a way to check that the internet connection is working e.g. connect a PC to it?
I conected the ASA behind a router and configured it with dhcp outside -> works perfectly. Changed the configuration to fixed IP and connect it directly to ISP cable -> not working. The ISP says it's not storring mac addresses (which I actualy checked by configuring and connecting 2 different routers -> works fine). I even changed the firmware on the ASA (upgraded and downgraded it)... no connection.
Thank you anyway for your help, I'll update the thread incase I come up with a solution.
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...