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 ...

I have a client with a ASA5520 that feeds their network. Bear in mind, I didn't have a single issue until they replaced their Astaro 220 Firewall with the ASA5520 The issue is, I have a downstream ...