May 2020 18
Root Hints Vs DNS Forwarders
Posted By : cybergavin

Root Hints The root hints file (named.root) contains the domain names and IP addresses of the authoritative nameservers for the root zone (represented by a “.”). This file allows a DNS server to resolve domain

May 2020 02
Collecting diagnostic data over SSH
Posted By : cybergavin

A couple of months ago, I had a requirement to gather diagnostic data from Palo Alto Networks (PAN) firewalls every few seconds for the PAN support technicians to assist us with identifying the root cause

May 2020 02
Customized Fail2Ban for SFTP Protection
Posted By : cybergavin

Fail2Ban is an intrusion-prevention software that scans log files and takes action as directed. Hence, it may be used to scan SSH logs for invalid user attempts or authentication failures and invoke iptables to block