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ROOT ‹ Network Security & Routing & Switching ‹ VPN / Dynamic VPN / Ipsec ‹ Juniper SRX Hub-and-Spoke IPSEC VPN \w HUB behind NAT.

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Juniper SRX Hub-and-Spoke IPSEC VPN \w HUB behind NAT.

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mandrei99

Post subject: Juniper SRX Hub-and-Spoke IPSEC VPN \w HUB behind NAT. | Posted: Tue Oct 29, 2013 11:25 am

Joined: Tue Aug 04, 2009 9:16 am
Posts: 250

Juniper SRX Hub-and-Spoke IPSEC VPN \w HUB behind NAT.

Since there are not many scenarios when the HUB is behind NAT, I've created an article that describes situations when two spokes are behind NAT and only one has a static NAT.

Most of the hub-and-spoke ipsec VPN environments have the HUB configured with a public IP address, but sometimes the HUB is behind static NAT (all packets to a public IP address on the NAT device are forwarded to the Ipsec HUB SRX device and all packets from this box are source nated to the same public IP that never changes).

This is the same as having two spokes behind NAT and one of them having static NAT and a tunnel between the two is necessary. Below articles describes this situation and provides solution to make the static NAT spoke (or HUB) establish ipsec phase 1 with other spoke behind NAT.

http://forum.ivorde.ro/juniper-srx-spoke-to-spoke-ipsec-vpn-when-both-spokes-are-behind-nat-t15671.html

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Topics		Author	Replies	Views	Last post
Topics related to - "Juniper SRX Hub-and-Spoke IPSEC VPN \w HUB behind NAT."
	Juniper SRX Spoke-to-Spoke IPSEC VPN \w spokes behind NAT.	mandrei99	0	5193	Tue Oct 29, 2013 9:22 am mandrei99
	Juniper SRX MTU / MSS / Fragmentation problems with Ipsec vpn tunnel	debuser	2	27721	Mon Jul 08, 2013 5:54 am Tears
	OpenSSL CA signed certificates based Ipsec VPN between Two Juniper SRX devices	debuser	2	11811	Thu Jun 27, 2013 10:40 am mandrei99
	Juniper SRX 11.4: Bypass IPSEC VPN IKE ID validation for "remote-identity"	mandrei99	0	4827	Thu Oct 31, 2013 5:00 am mandrei99
	Linux site to site GRE over IPSEC VPN tunnels using racoon & kame ipsec-tools	mandrei99	0	15965	Tue Jan 13, 2015 6:26 am mandrei99
	Site2Site Ipsec/Dialup/ike v2	balzac123	0	2631	Wed Sep 16, 2015 9:07 am balzac123
	Iphone/Ipad Ipsec VPNs using SSL certificates - How to use OpenSSL to generate and format certs	mandrei99	0	5663	Wed Apr 10, 2013 5:42 am mandrei99
	PKI: How to import OpenSSL private key and public certificate in Juniper SRX	mandrei99	0	43618	Fri Dec 12, 2014 10:07 am mandrei99
	Juniper SRX: Main mode for dynamic peer with Preshared key based authentication is not allowed	mandrei99	0	4042	Fri Jan 09, 2015 11:41 am mandrei99
	error: Failed to encode the certificate request in PKCS-10 format - Juniper SRX PKI error	mandrei99	0	3165	Fri Dec 12, 2014 10:32 am mandrei99

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