tcpwrap_check
Opis
bool tcpwrap_check ( string daemon, string address [, string user [, bool nodns]] )
   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.
  
Parametry
daemonThe service name.
addressThe client remote address. Can be either an IP address or a domain name.
userAn optional user name.
nodnsIf
addresslooks like domain name then DNS is used to resolve it to IP address; setnodnsto TRUE to avoid this.
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