how do i check whether an ufw rule is reboot-safe?
klaus thorn asked: So I have just added a firewall rule using ufw. How do I know whether I have to do additional steps to make this rule also automatically …
php error installing imagick
Tiago Martinho asked: System – CentOS 7.5.1804 PHP Version – 7.0.3 So, I’m trying to install Imagick in order to be able to render/make an image off the first page …
Set static IP in OpenVPN
IanArman asked: I have an OpenVPN server (pivpn.io), and three server clients. I’m trying to set a static IP address, for the VPN clients. I’ve created ipp.txt /etc/openvpn/ccd/ipp.txt. The file …
Adding a bridge kills the internet connection from all interfaces
OH MY DEAR PUFFINS asked: I’m working on debian stretch with the newest xen from repositories. I’ve never worked with xen before, so bare with me. I’ve searched far and …
Does it makes sense from a security perspective to remove the server HTTP header?
chevallier asked: I’m using Varnish and I’m not quite sure if I should also remove the server: nginx HTTP header. Why do someone needs to know that I’m using NGINX? …
Do I have to, and how do I setup bounce emails HELO command?
Skippy le Grand Gourou asked: Our server has been listed several times on CBL (see this question) because it “attempted to send email without using the HELO/EHLO command”. Grep’ing on …
Save Docker containers as single image
John Mc Murray asked: I don’t have much experience with Docker so not sure if this is even possible, but I’m trying to export my Docker containers as a single …
Starting Redis in systemd with Auth
Nathan Thomas asked: Does anyone know how to pass the auth to redis “when it is started in systemd.” You have to use a custom init script here. Mine is …
Is live migration causing data corruption?
Theo Lassonder asked: We have two virtual hosts (Xen 4.9) and live migrate guests between them. The storage of the guests is accessible via iSCSI. That is, a guest running …
How to secure servers from attack
Dovid Bender asked: We got a POST request to our server with the following in it: %63%67%69%2D%62%69%6E/%70%68%70?%2D%64+%61%6C%6C%6F%77%5F%75%72%6C%5F%69%6E%63%6C%75%64%65%3D%6F%6E+%2D%64+%73%61%66%65%5F%6D%6F%64%65%3D%6F%66%66+%2D%64+%73%75%68%6F%73%69%6E%2E%73%69%6D%75%6C%61%74%2D%64+%64%69%73%61%62%6C%65%5F%66%75%6E%63%74%69%6F%6E%73%3D%22%22+%2D%64+%6F%70%65%6E%5F%62%61%73%65%64%69%72%3D%6E%6F%6E%65+%2D%64+%61%75%74%6F%5F%70%72%65%70%65%6E%64%5F%66%69%6C%65%3D%70%68%70%3A%2F%2F%64+%63%67%69%2E%66%6F%72%63%65%5F%72%65%64%69%72%65%63%74%3D%30+%2D%64+%63%67%69%2E%72%65%64%69%72%65%63%74%5F%73%74%61%74%75%73%5F%65%6E%76%3D%30+%2D%64+%61%75%74%6F%5F%70%72%65%70%65%6E%64%5F%66%69%6C%65%F%69%6E%70%75%74+%2D%6E Using url decode this translates to: cgi-bin/php?-d allow_url_include=on -d safe_mode=off -d suhosin.simulation=on -d …