This column is available in a weekly newsletter called IT Best Practices. Click here to subscribe. Companies like Norse and Akamai track the source IP of Internet attack traffic and compile lists ...

While ICMP is required for IP network traffic redirection and pinging hosts on your LAN or WAN, ICMP can also pose a security concern. David Davis tells you about the basics of ICMP and how to filter ...

FireHost, a provider of secure cloud hosting, uses an IP reputation filter to help protect its customers. Reputation filters use a blacklist of known 'bad' IP addresses belonging to malevolent ...

Botnet armies have got bigger, more active and more heavily armed than ever before. In the first quarter of 2016, attacks launched by bots reached a record high of 311 million – a 300% increase ...

Most of you probably have heard of Wireshark, a very popular and capable network protocol analyzer. What you may not know is that there exists a console version of Wireshark called tshark. The two ...

More than 87% of active domain names are found to share their IP addresses (i.e. their web servers) with one or more additional domains, and more than two third of active domain names share their ...