I am a netwrok administrator at a small company (22 PCs) and i have a problem, and i don't know what could be the cause. I can't access a specific website from the LAN. I have a server which has 2 ...
I'm learning how to use iptables and I'm writing a very simple firewall on Ubuntu. Using just the filter table, I added the following rules iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P ...
For this command lines: sysctl net.ipv4.ip_forward=1 iptables -t nat -A PREROUTING -p tcp --dport port -j DNAT --to-destination ip:port iptables -t nat -A POSTROUTING -j MASQUERADE I can reroute ...
I edited /etc/hosts file and entered below information : 127.0.0.1 test.com //working 127.0.0.1 https://test.com //not working . from the above info, http://test.com is redirecting to ...
I am currently using the following rule: ufw allow out from my_local_ip to any port 587 This is a little too lax for my liking. I would like to tighten it up and restrict it to only gmail's smtp ...