Difference Between Network Firewall and Web Application Firewall
A Network Firewall acts as a security barrier between a trusted network, such as the local network (LAN), and an untrusted network, such as the Internet. A >Web Application Firewall (WAF) monitors and allows or blocks data packets as they travel to and from a Web application. More ...
Intrusion Detection System (IDS) and Intrusion Prevention System (IPS)
"Most organizations use both IDS and an IPS. The IPS automatically blocks attacks where it is accurate, while the IDS logs and notifies network administrators of suspicious activity so they can use their judgment as to what countermeasures to take. More ...
What is a Botnet Attack and How to Identify It?
Attacks against networks are increasing because attackers find many networks are not properly patched and secured behind a firewall. Once attackers have compromised a machine, they simply install a bot on it to establish communication. The botnet is then controlled by the attacker. More ...
Are You Meeting ISO 27000 Standards for Information Security Management?
The ISO 27000 standard developed by The (IEC) and (ISO) is an internationally accepted industry standard for Information Security Management (ISM). More ...
How to Stop Hackers from Invading Your Network
Large corporations, banks, financial institutions, security establishments are particularly favorite targets for hackers. However, this menace can be prevented to a great extent if proper security measures are taken. More ...
Firewall Internet Security - The Basics of a Firewall
Enterprise companies today employ firewalls that inspect sessions between external and internal hosts and devices. The firewall filters traffic by examining the source and destination IP addresses, application port and protocol port before making a decision whether to permit or deny a session or specific traffic. More ...
NMAP (Network Mapper) Port Scanner
When hackers attempt to gain unauthorized access to a computer on the Internet the first things they do is look for open ports. NMAP is a free and open source port scanner that hackers can use to automate the process of finding open ports to attack. More ...
How to Use the Open Source Intrusion Detection System SNORT
In terms of raw power and features, SNORT, the most commonly used Open Source Intrusion Detection System, (IDS) has begun to eclipse many expensive proprietary IDSes. In terms of documentation or ease of use, however, SNORT can seem overwhelming. More ...
Data Encryption
There are two kinds of key encryption: private key and public key. In private key encryption a single key is used. Public key encryption uses two keys. One key, called the private key can only be used to decrypt a document. The other key, called the public key, can only encrypt a document. More ...
Digital Signatures and Certificates
The construction of the Digital Signature entails applying a hash function to the message by concatenation of the message with a known secret key and then applying a mathematical function which will produce a fixed length output known as the digest. More ...
Elementary Information Security
This book is certified to comply fully with the NSTISSI 4011 federal training standard for information security professionals. The text emphasizes both the technical and non-technical aspects of information security and uses practical examples and real-world assessment tools. More ...
Firewall Rules
The purpose of a network firewall is to protect computer and IT resources from malicious sources while allowing internal network users to access the Internet. For this purpose it uses an Access Control List (ACL). More ...
Man in the Middle Attack
In a Man in the Middle (MIM) attack the hacker places eavesdropping equipment between the sending device and the receiving device. He intercepts the data, records it and possibly modifies it, then sends it on to the intended receiving device. More ...
