tcpwrap_check

Performs a tcpwrap check

&reftitle.description; `bool` `tcpwrap_check` `string` `daemon` `string` `address` `string` `user` `bool` `nodns`&false;

This function consults the `/etc/hosts.allow` and `/etc/hosts.deny` files to check if access to service `daemon` should be granted or denied for a client.

&reftitle.parameters;

`daemon`

- The service name.

`address`

- The client remote address. Can be either an IP address or a domain name.

`user`

- An optional user name.

`nodns`

- If `address` looks like domain name then DNS is used to resolve it to IP address; set `nodns` to &true; to avoid this.

&reftitle.returnvalues;

This function returns &true; if access should be granted, &false; otherwise.

&reftitle.examples;

### Deny all connections from localhost

If your `/etc/hosts.deny` file contains:

    php: 127.0.0.1

And your code looks like:

    <?php
    if (!tcpwrap_check('php', $_SERVER['REMOTE_ADDR'])) {
      die('You are not welcome here');
    }
    ?>

&reftitle.seealso;

For more details please consult hosts_access(3) man page.