Web Hosting Talk : Web Hosting Main Forums : Hosting Security and Technology : changing ip of a domain

[Mong]

I want to change the ip (outgoing) of a site hosted on my dedicated server. Currently I have changed ip address of the site from WHM though site has become accessible with new ip but outgoing ip is still the same old one which is main ip of the server.

[lebnene]

what do you mean by outgoing ip? are you referring to the outgoing ip address of the emails?

[Mong]

outgoing ip means the ip shows up to the different services like yahoo api when accessing from the script hosted from a site.

[HostMantis]

Do you mean the IP a remote server sees? If you changed the IP for the site in WHM, then remote systems should see the updated IP once DNS has propagated.

If you are still seeing the old IP from remote systems, it more than likely just hasn't fully propagated yet. Or the remote system is caching the old IP. Give it some more time to update and check it again.

If this is not what you mean, then I'm really not sure what you are talking about.

[Mong]

^^ but shouldn't remove servers should see the ip from which request is made?

suppose i access whatismyipaddress.com but it still shows me old ip.

[HostMantis]

Originally Posted by Mong

^^ but shouldn't remove servers should see the ip from which request is made?

suppose i access whatismyipaddress.com but it still shows me old ip.

It should if the remote system is using up-to-date DNS records.

You should give it some more time to update and if the remote system still sees the old IP, then there may be an issue.

[guru4hosting]

How you are trying to access yahoo api from the server ?

[david510]

Originally Posted by Mong

outgoing ip means the ip shows up to the different services like yahoo api when accessing from the script hosted from a site.

If you are using any mail script, it will show the server main IP only, as the mail server IP would still be the server main IP address. We can change the mail server IP to a dedicated IP by configuring the exim.

[guru4hosting]

I guess you are trying to access the yahoo API from the server and yahoo server see connections origination from the server main IP, no matter what his domain IP is.

I think you can use iptables NAT rules to override the source ip.

http://netfilter.org/documentation/H...T-HOWTO-6.html

[Mong]

Originally Posted by guru4hosting

I guess you are trying to access the yahoo API from the server and yahoo server see connections origination from the server main IP, no matter what his domain IP is.

I think you can use iptables NAT rules to override the source ip.

http://netfilter.org/documentation/H...T-HOWTO-6.html

Exactly! I am facing that problem.

I have checked your link and I think following command would work

## Change source addresses to 1.2.3.4.
# iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to 1.2.3.4

But problem is that I want to change source ip of a single domain (site) only while I host couple of more sites on same server. I don't want to change source ip of all of them.

[madaboutlinux]

Will it be using port 80? If yes, it won't be possible just to route a specific connections to port 80 to another IP.

[Mong]

Then what's the solution?

[guru4hosting]

you can NAT based on destination ip, that is use specific ip address while connecting to yahoo api server. I guess that would work.

[Mong]

Originally Posted by guru4hosting

you can NAT based on destination ip, that is use specific ip address while connecting to yahoo api server. I guess that would work.

Would you please elaborate a bit?

[guru4hosting]

iptables -t nat -A POSTROUTING -d <replace with yahoo server> -o eth0 -j SNAT --to 1.2.3.4

Can you please try this ?