> On January 26, 2018 at 9:45 AM Alexandre DERUMIER <aderum...@odiso.com> wrote: > > > > >>Sorry, too much information for me. Please can you explain why we need > > >>a floating IP? > > > > floating ip are simply public ip which are used to do nat 1:1. > > (internet->public ip -->nat 1:1-> private ip) > > (they call them floating, because you can reassign them to another private > > ip > > on the fly ..but it's just nat). > > >>But why do we need it? Can't we use the host IP to masquerade private ip? > > This is not masquerade (s-nat, multiple private ip -> 1 public ip), this is > nat 1:1 (the reverse way, internet->multiple vm ip public). > > host: 89.248.0.1 -> vm1 192.168.0.1 > host: 89.248.0.2 -> vm2 192.168.0.2 > host: 89.248.0.3 -> vm3 192.168.0.3 > > iptables -t nat -A POSTROUTING -o eth0 -s 192.168.0.1 -j SNAT --to-source > 89.248.0.1 > iptables -t nat -A PREROUTING -i eth0 -d 89.248.0.1 -j DNAT --to-destination > 192.168.0.1
Why does the VM not use the public IP directly? _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
