I have a GSR 12008. I have applied an access-list to serveral of the interfaces to prevent the latest UPNP exploit from crossing subnets. However, the access-list is not working. I can still see port 1900 from either side or the router. The access-list and relevent config follows:
access-list 102 deny udp any any eq 1900 log-input
access-list 102 deny tcp any any eq 1900 log-input
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...