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https://community.cisco.com/t5/other-security-subjects/why-doesnt-ipsec-support-multicast-traffic/td-p/157915
multicast traffic, there are multiple destination systems per. multicast group. So some system or person will need to coordinate. among all multicast groups to select an SPI or SPIs on behalf of each. multicast group and then communicate the group's IPsec information to. all of the legitimate members of that multicast group via mechanisms. not ...
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/V3PNIPmc.html
Aug 29, 2008 · IPsec was created to be a security protocol between two and only two devices, so a service such as multicast is problematic. An IPsec peer encrypts a packet so that only one other IPsec peer can successfully perform the de-encryption. IPmc is not compatible with this mode of operation.
https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/41940-dmvpn.html
Jan 04, 2006 · Dynamic routing protocols rely on using IP multicast or broadcast packets, but IPsec does not support encrypting multicast or broadcast packets. The current method for solving this problem is to use generic routing encapsulation (GRE) tunnels in combination with IPsec encryption.
https://support.zyxel.eu/hc/en-us/articles/360000719060-How-do-I-allow-Multicast-packets-over-IPSec-Site-to-Site-VPN-
The usual IPSec Site-to-Site tunnel can not do this. The VTI interface can transmit multicast traffic in a VPN tunnel. (VIT interface must use site-to-site VPN) 1. Select "VPN Tunnel Interface" for the VPN connection 2. Go to Configuration> Network> Interface> VTI> click on Add VTI interface. It has support for IGMP (multicast) function. KB-00176
https://tools.ietf.org/html/rfc5374
Scope The IPsec extensions described in this document support IPsec Security Associations that result in IPsec packets with IPv4 or IPv6 multicast group addresses as the destination address. Both Any-Source Multicast (ASM) and Source-Specific Multicast (SSM) [ RFC3569 ] group addresses are supported.Cited by: 56
https://learningnetwork.cisco.com/thread/95756
Nov 14, 2019 · As Sean said, the IPsec protocol was not specified in the original specifications. To support multicast, you should use IPsec over GRE.
https://security.stackexchange.com/questions/85915/ipsec-on-multicast
IPsec on multicast. Ask Question Asked 4 years, 7 months ago. Active 4 years, 7 months ago. Viewed 2k times 5. I am trying to implement IPSec for multicast communication, I tried strongSwan for setting up IPSec for unicast but it doesn't support any standard for multicast ipsec as listed here https: //wiki ...
https://networkengineering.stackexchange.com/questions/44774/which-vpn-types-protocols-inherently-support-multicast-traffic
There's a relatively new thing called VTI(Virtual Tunnel Interfaces)'s, which are IPSec VPN tunnels that support multicast. It only supports IP traffic though, doesn't support NHRP so couldn't be used for DMVPN. Note about relatively new: at this point, most commercial vendors support VTI's (cisco, juniper, etc).
https://social.technet.microsoft.com/Forums/windows/en-US/49dda2b0-6d12-4076-9556-9eb15fd1907c/ipsec-for-multicast-ipv6-win7
Mar 05, 2012 · Short: I want my clients on the net only accept router advertisements which are authenticated over IPSec. Detail: I use several Windows7 machines. Now I want one of them to send router advertisements and secure them by IPSec. I want to use a pre shared key for the authentication and the other ... · Hi KarlBezler, Here are two related and detailed ...
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