Conventional, woodpecker-style port knocking is open to sniffing and brute force knocking attacks. Sending an encrypted packet with an access request to the server is safer and more modern. Learn more about Firewall Knock Operator, a.k.a. Fwknop.
Need to quickly encrypt a file or an archive? You can do this using the GPG software which is installed by default on many mainstream Linux distributions.
The U.S. network backup software provider TOLIS Group is preparing a new version of its BRU Server data security product and promises significant enhancements.
Internet intruders have many ingenious ways of escalating privileges and hiding their presence once they get inside your system. The best protection is to keep them out in the cold.