I have an ASA 5510 and configured a vpn site to site with a Sonicwall and everything works "ok" (the connection is established successfully) exept that my firewall Cisco ASA to SonicWALL flooded with messages such as I detail below:
Received notify. NO_PROPOSAL_CHOSEN
the VPN configuration is as follows:
IP Address Tunnel Endpoint Endpoint at Ent1
Manufacturer and Model of Ent1 VPN Gateway
Sonicwall NSA 2400
IP Adress Tunnel Endpoint Bussiness Partner (Public IP of your VPN Gateway
Manufacturer and Model of Your VPN Gateway:
Cisco ASA 5510
Pre-shared key: to be discussed via phone/SMS/Fax
Negotiation of AH for ISAKMP
Diffie - Hellmann Group
Encryption Hash Algorithm
The ASA version is 8.4(4) and in most of the settings I use the ASDM 6.4
please could someone tell me why this may be occurring
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...