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How can i lock my current IP address?

the LAN IP address is the 192.**. I know that, but i want to lock up my IP address which i found on the http://whatismyipaddress.com/, which is something like this 115.***

because right now my client are using my IP address to give me the access to their server and my IP address keep on changing everytime i restart my router (because i need to)

Help please help!

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migrated from stackoverflow.com Jul 27 '11 at 16:43

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6  
Contact your ISP. –  SLaks Jul 27 '11 at 16:41

1 Answer 1

You need to ask your ISP for a static IP address.
They are likely to charge extra for it.

Alternatively, you could use a dynamic DNS provider, such as No-IP, which will give you a domain name that always resolves to your IP address.

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The problem is that most programs use reverse DNS for checking the access list, and changing it requires a static address too. –  grawity Jul 27 '11 at 16:46
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The chances are virtually nil that he needs to worry about a PTR record. It is almost certainly that the company's firewall just restricts connections to a specific IP. I have never heard of a firewall checking a PTR record (reverse DNS) in this case. –  KCotreau Jul 27 '11 at 17:00
    
PTR records are typically only necessary for mail servers. –  MaQleod Jul 27 '11 at 23:05

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