Internet service providers

To find generic instructions on how to configure port forwarding, see Main configuration box

A "no" may cause problems for using your server or may require you to make additional configuration changes. Status in brackets indicates the default behavior.

South Korea

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
LG U+ (HelloVision) Multiple Yes Yes (Without ISP Router) No - Partial
KT(SkyLife, Qook&Show) Multiple Yes Yes No - Partial
SKT (SK Broadband) Multiple Yes Yes No - Partial

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