Please check the "acceptFrom" parameter from web.conf acceptFrom = <network_acl> ...
* Lists a set of networks or addresses from which to accept connections.
* Separate multiple rules with commas or spaces.
* Each rule can be in one of the following formats:
1. A single IPv4 or IPv6 address (examples: "10.1.2.3", "fe80::4a3")
2. A Classless Inter-Domain Routing (CIDR) block of addresses
(examples: "10/8", "192.168.1/24", "fe80:1234/32")
3. A DNS name, possibly with a "*" used as a wildcard
(examples: "myhost.example.com", "*.splunk.com")
4. "*", which matches anything
* You can also prefix an entry with '!' to cause the rule to reject the
connection. The input applies rules in order, and uses the first one that
matches.
For example, "!10.1/16, *" allows connections from everywhere except
the 10.1.*.* network.
* Default: "*" (accept from anywhere)
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