y iptables based firewall allows only port TCP 80 and 443. I also need tcp port # 22, but I do not have static IP at my home. How do I open and close TCP port #22 on demand under Debian or Ubuntu Linux based server systems? How do I install a port-knock server called knockd and configure it with iptables to open tcp port #22 or any other ports?
am the small business owner and runs my own web-site. I have noticed increased cracking activity against by blog. What’s the best way to block WordPress URLs such as example.com/blog/wp-login.php and example.com/blog/wp-admin/ in the nginx web-server?
have setup an Apache web server on CentOS Linux. How do I configure firewall to allow or block access? How do I setup firewall for a web server under RHEL or CentOS Linux v6.x?
ppArmor (“Application Armor”) is a security module
for the Linux kernel and integrated into both kernel and Ubuntu Linux. How do I disable AppArmor protection for mysql profile / service under Ubuntu or Novell Suse Enterprise Linux?
ow do I use tar and rsync command that can preserve the ACLs, extended attributes and SELinux contexts under CentOS / RHEL / Fedora Linux server while making backups?
How do I make sure only authorized person access my backups stored on the tape drives (DAT, DLT, LTO-4 etc) under Linux or UNIX operating systems? How do I backup /array22/vol4/home/ to /dev/rmt/5mn or /dev/st0 in encrypted mode?