grimdari
join:2004-04-28
North Little Rock, AR | NAT and Static IP address help on 3220-H I am running a Cayman 3220-H on a block of static IP addresses. For reference they are 101 for my Cayman, 102 through 105 for my PCs, and 106 for the gateway that my Cayman talks to at my ISP. I am out of available IP addresses for my home network. So I want to create an internal 192.168.X.X internal network. I could easily change the router to use DHCP and let all the hardware find its own number, however I have a machine that does MAIL, WEB, DNS, POP3 etc etc that I 'need' to keep a static address for. So I am needing to use NAT to make it work. However, each time I try using NAT I get errors like "192.168.X.X address is not on same subnet as x.x.x.206". I try changing things around a bit to no avail. Would anyone know of a site that has a tutorial on what I am trying to do? Or can anyone here offer a step by step proccess on doing what I need to?
Thanks |
 davidgGood Bye My FriendPremium,MVM
join:2002-06-15
none | you have several options.
for the first one, see »Cayman Routers »[BellSouth] How do I configure my Cayman for 5 Static IPs? it is for bellsouth, but the principal is the same if you are on ppoe/oa. you would leave your WAN set to .101, but change the LAN ip to 192.168.1.254 subnet 255.255.255.0. make sure you enable NAT on the WAN interface. then to use your statics, you simply create an ipmap for each one. any machine not having an ipmap would appear to the rest of the internet as having ip address .101.
the drawback to using NAT is that you cannot access your machines by their public ips anymore. this means that if you try to surf to www.yoursite.com, it will not make it due to the cayman not supporting loopback.
your next option is if you are on RFC-1483 bridge you may can use concurrent routing and bridging. for this, you set your cayman lan ip to 192.168.1.254, turn on NAT on the WAN interface, and turn on bridging. this will allow you to have multiple machines using NAT, and have other using public ips. again, the NAT machines will not be able to access the public machines and vice versa. see »www.netopia.com/en-us/support/te···021.html
last option is to simply go buy a small SOHO router, plug it behind the cayman and give it one of you publics on its WAN interface. plug your machines that do not require a public ip behind it. with this configuration, your non public machines could still access your web, mail, etc but your public machines will NOT have access to your private ones.
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