Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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public IP pool behind linux router
Dear Guru help require.
I have scenario to solve, I have to configure public IP on my network PC which are behind Linux router.
220.127.116.11/32(router WAN-IP eth1) --> 192.168.1.1 eth0 and 18.104.22.168/29 eth0:1 (router LAN-IP)
default GateWay of my linux router is 22.214.171.124
now I configure IP 126.96.36.199/29 on my windows machine, and Internet is working fine , but I get 188.8.131.52 on www.whatismyip.com, question is WHY this IP shows on whatismyip.com???? why 184.108.40.206 not shows on whatismyip.com??? what I am doing wronge?? help me
You should provide more information about your router and network. First you should provide us your network stuff from your router (especially NAT rules, routes and interfaces). Beside of that I still didn't get why you use 192.168.1/24 as you seem to not need it. In short: be more verbose.
The last three bits determine which host is addressed.
The first one will have these bits all zeros. This is your network address. The last one has all three bits ones. This is your broadcast address. One of IP addresses will be used for your router's gateway address. By convention, the first or last legal IP address for your network (not ending in 000 or 111).
Your IP addresses are all over the place. Please indicate what block of address you were given by your ISP.
Maybe you transposed a couple numbers.
This doesn't make sense: 220.127.116.11/29
But this does: 18.104.22.168/29
You have two networks. One with a private address range. Another with a public address range. Your router will have one rule to route traffic for each range, with the private being masqueraded to one or more of your public IP addresses.
If you have a block of public IP addresses because you are offering services on the Internet, then you should have two firewalls and place the public hosts in the DMZ. You want to isolate the LAN traffic from incoming Internet traffic. You could also use three NICs. One for the WAN, one for the DMZ and one for the LAN.
I would recommend you read through the Network Administrators Guide book. It is an O'Reilly book. The second edition is available for free: