for me, a vmware machine normally has 2 lan interfaces, one connected with the lan or the management computer and the 2nd one connected with the wan interface for public access.
so security is ensured by having a firewall in front of the "public network card" of vmware and only making it possible to access the managment interface over the "private network card".
but how do i ensure security, if i install vmware esxi 5.0 on normal dedicated root server with multiple public ips, without a firewall in front of the server, without any (for me accessable) routing before the server, without multiple network interfaces?
i found the article about the firewall: http://www.virtualizationadmin.com/articles-tutorials/vmware-esx-and-vsphere-articles/networking/understanding-vmware-esx-server-security-profiles.html
but on which ip is the port open? is it bound to all public ips? can i bind the management interface to a specific ip? how to bind one ip to the management interface and the rest to one or more virtual machines?
i thought about making a vlan inside esxi and let building up a vpn over a routing vm, and making the managment console only accessable with an ip from the vpn but i tastes a little bit after how to lock myself out.
edit: root server like: server4you.com/root-server a single server where vmware is installed, "directly" connected to the internet -> directly attackable, not in a well secured lan
edit2: keep in mind, that people who don't have english as their first language, maybe define things, like "root server" different than you. please comment on the question and write something about how making the question more clear for you.
maybe this phraseing is better: how to make a vmware esxi 5.0 server secure, which has only one network card and is directly connected to the internet?
i have no experience with securing esxi connected like that to net, if i run a virtualization like kvm or vserver it is rather easy, just securing the host server with a iptables firewall and also handle the routing there.
i havn't found a good info about my problem googleing for it, its quite a special problem, companies how do virtualization have a whole cluster of vmware servers and often not only one firewall in front of them.
so they simple don't have to secure a single vmware esxi host without an extra firewall and only a single network interface. others maybe don't virtualize or do not care about security.
so i ask the downvoters, is this question so bad?