Large number of session from inside to outside ( how to stop)
Hi every body,
Today i want to disuccs one issue i am facing on my network ( might be it common ).
My network Topology is simple, there is one Inside network , one Outside and one DMZ.
on My inside LAN, one host is continously making session with outside live host on port 53. We are using NAT for all traffic that go for internet.
This one host is making more then 1000 session when i give the command " show conn " . I try to block outside and inside host by using ACL , but it not working as i want ( this acl do not block what i want)
like this " access-list acl-inisde deny ip host x.x.x.y host 192.168.2.2 ( where x.x.x.y is live IP on internet).
access-group acl-inside out interface inside.
But again when i look in to show conn table i found more then 1000 enteries with in few seconds. Port use for host is UDP 53.
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...