I one question to all cisco IDS/IPS professionals. If the management port only accept inbound traffic how can I then activate my Cisco 4510 IPS appliance to get automatically signature updates from cisco.com ? That one requires outbound traffic too.
You Management0/0-port only supports "to-the-box" traffic which means that you can't use that port for an inline pair or a vlan-pair. But with the IP on that port configured, you can not only connect to your sensor, the sensor can also initiate connection to the rest of the network and so you can reach your update-destionations.
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...