too many sessions on ASA firewall from ip phones to CUCM
We have several ip phones at WAN side . These phones connected to CUCM using VPN lines . There is an ASA firewall between phones and servers . A few days ago we saw that one of the brunch is using ASA's 75% of capacity .Most probably it was an attack (we couldn't check the traffic details because our technician has been changed it with spare firewall ). how can we prevent our CUCM networks this kind of attacks ? .We are planning to make limitation of connections for every brunch on firewall. There can be special configuration example or an advice better than this .
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...