How reliable is IP filtering?

S

sbh2016-09-30 06:32:28

Computer networks

sbh, 2016-09-30 06:32:28

Good afternoon.
The proxy is configured with a port forwarding rule filtered by IP address.
Those. connection is possible only from 1 IP address.
Filtering is implemented using iptables.

How secure is this setup in terms of security? Is there a theoretical\practical possibility of changing the address and gaining access?

Would it be safer to create an OpenVPN tunnel, for example, and let traffic through it?

Please support the answers with a description / links to the implementation of such a substitution, if it is possible in principle, which I doubt.

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2 answer(s)

A

Armenian Radio, 2016-09-30
@sbh

Not at all reliable.
There is a possibility of IP substitution, and it is not theoretical, but practical.
Yes, you need a VPN

S

sbh, 2016-09-30
@sbh

I think I found
https://xakep.ru/2010/11/02/53653/
https://ru.wikipedia.org/wiki/IP-%D1%81%D0%BF%D1%8...