- 1 year ago
How to verify the hostname obtained by resolving IP is the correct one
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To verify if the hostname obtained by resolving an IP address is the correct one, you can compare the resolved hostname with the expected hostname. Here's how you can do it in Python:
- Import the necessary modules:
pythonimport socket
- Specify the IP address and expected hostname:
pythonip_address = "192.168.1.1"
expected_hostname = "example.com"
- Resolve the IP address to a hostname using
socket.gethostbyaddr()
:
pythontry:
resolved_hostname = socket.gethostbyaddr(ip_address)[0]
except socket.herror:
resolved_hostname = None
- Compare the resolved hostname with the expected hostname:
pythonif resolved_hostname is None:
print("Unable to resolve the hostname.")
elif resolved_hostname == expected_hostname:
print("The resolved hostname matches the expected hostname.")
else:
print("The resolved hostname does not match the expected hostname.")
In this example, we use socket.gethostbyaddr(ip_address)
to resolve the IP address to a hostname. If the resolution is successful, the first element of the returned tuple contains the resolved hostname. If the resolution fails, a socket.herror
is raised, and None
is assigned to resolved_hostname
.
By comparing the resolved hostname with the expected hostname, you can determine if they match or not.
Note that the success of hostname resolution depends on the availability and configuration of DNS servers and the accuracy of the DNS records.