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Understanding the Loopback Address
- Authors
- Name
- hwahyeon
127.0.0.1 and localhost both refer to the IP address of the current computer, also known as a loopback address. A loopback address uses a virtual network interface instead of a physical one, and it cannot be accessed from external networks. Therefore, it is safe to use for testing servers or during application development.
In IPv6, the loopback address is ::1, which corresponds to 127.0.0.1 in IPv4.