But unfortunately that didn't work. So I went into the command reference to find out what i need to do with the access-list, access-group and nat commands. My objective: to get a port on my external ...

David Strom is the author of two books on computer networking, along with thousands of articles on various IT topics. Follow him on Twitter: @dstrom To better protect the enterprise network, ...

Here’s a guest post sent to me by Don Crawley, author of The Accidental Administrator book series. It is an excerpt from his latest:The Accidental Administrator: Cisco ASA Security Appliance: A ...

We have a VPN configured through a Cisco ASA 5505. We are getting hammered by some IP addresses that appear to be located in China and would like to put a stop to this. I have a little bit of a ...

BLACK HAT USA — Las Vegas — Cisco's enterprise-class firewalls have at least a dozen vulnerabilities — four of which have been assigned CVE identifiers — that could allow attackers to infiltrate ...

Cisco fixed a high severity and actively exploited read-only path traversal vulnerability affecting the web services interface of two of its firewall products. If successfully exploited, the security ...

Two of the most common forms of network address translation (NAT) are dynamic port address translation (PAT) and static NAT. PAT is the many-to-one form of NAT implemented in many small office and ...

Whether you're in the office or on the road, a VPN is still one of the best ways to protect yourself on the big, bad internet. Read now Cisco has warned customers using its Adaptive Security Appliance ...

After observing attacks on customers, Cisco is telling users to install the fix for a recently disclosed denial-of-service flaw affecting a number of its security appliances. The flaw, tracked as ...

In-the-wild XSS attacks have commenced against the security appliance (CVE-2020-3580), as researchers publish exploit code on Twitter. Researchers have dropped a proof-of-concept (PoC) exploit on ...