I have a weird problem and I wonder if anyone can help me as I really don't know what else to do. I'm administering a Linux server (Fedora 17), for a SMB company (~100 LAN computers). This server ...
I have a machine with Ubuntu 12.04 64 bit, i have the need for blacklisting a module, i have blacklisted it in blacklist.conf but nothing happened; i have solved my problem passing ...
There seem to be many different ways to setup whitelist rules within iptables. What is the wisest way to whitelist the CloudFlare IP address ranges below via SSH? 220.127.116.11/24 (18.104.22.168 - ...
how can I configure postfix to allow sending to a certain (external) domain only? I'm already using check_recipient_access. Content of my /etc/postfix/recipients_restrictions: domain.com OK My ...
I administer a web server and recently we had our IP banned (!) from our host after they received a notification e-mail for abuse. In particular our server is allegedly involved in spam attacks over ...
I have a few ip ranges to which I want my server to able to connect and users to connect from. Everything else should be blocked. How should I do that with iptables? My OS is Debian based linux ...
Is there efficient and easy way to use IP blacklist (like this one, but perhaps 2-3 times larger, which can't be simplified to CIDRs much) to deny access to a web server (either lighttpd or Apache) ...