I need to set a site-to-site IPSEC VPN connection for the first time. I'm going to connect to one of our data feed suppliers, how have their internal IP as 10.30.0.0/16. However I already have this network setup on my end. I assume I have to use NAT here (not my best area). Can someone please point me to some configuration or how to begin this? I'm using a PIX-515 firewall.
Also they've asked me for our external IP that we are going to use to begin the VPN connection from. Currently I have one IP that is being used as our source address after internal traffic has been natted to it i.e 212.X.X.X. If I use this as the source address for teh VPN connection will it disrupt my normal traffic in anyway? i.e do I have to use a separate IP for VPN and a separate one for natting our internal IP's to go on the internet?
Thanks in advance