You can make a search inside files within a a directory using the command “find“, to do that: with the find command cd /to_folder find . -iname ‘*conf’ | xargs grep ‘string’ -sl -iname ‘*conf’ states that the seach will only check the files ending with *conf, using -iname ‘*’ will search inside all the […]

If you own your DNS servers, you should probably want to close recursive queries being gathered from your servers. In named.conf edit the options directive and add: options { allow-transfer {Secondary Server IP; }; allow-recursion {; A.B.C/24; }; }; In secondary server: add to options: allow-transfer { none; }; allow-recursion {; A.B.C/24; };

The standart linux distrubition calls that the ephemeral port range be between 1024 and 4999. We we all know that some of these ports are used for other more importand applications than FTP. So security is an issue because leaving those original ports open leads to major security holes. Rather than openning ports that need […]