VPN by Kent Pinkerton
A virtual private network or VPN is a network that is used to connect nodes. It is constructed using public wires. Many systems enable users to create a network using the Internet. The Internet is used as a means of transporting data. Security mechanism such as encryptations and others are used... It maintains privacy through security procedures and tunneling protocols like the Layer Two Tunneling Protocol (L2TP). ... This protocol sends the data through a ""virtual tunnel"", It encrypts the data before sending it and decrypts it on receiving it at the other end.

Secure Remote Access by Josh Riverside
The advancement of information technology and wireless communication has made our life simpler by making information available even from distant sources at the click of a mouse. With Remote Access technology, a user can access a computer located in a remote distance by gaining full control of... There are several varieties of affordable VPN protocols-, PPTP (Point-to-Point Tunneling Protocol), L2TP (Layer 2 Tunneling Protocol) and SSL. ... By creating an encrypted ""tunnel"" through the public network, VPNs protect data in transit while achieving significant savings over alternative...

Key Concepts of Virtual Private Networks by Thoas Powel
Virtual Private Networks claim to solve majority of the security problems faced by the enterprises. Most of the issues were related to secure data transfer over the public internet. The internet's greatest asset is ubiquity and openness but this is its greatest weakness as well. ... • IPSec Protocol • Tunneling protocols (PPTP:Point to Point tunneling protocol, L2TP: Layer2 Tunneling protocol ) • Socks5 Services Many managed VPN services offer Quality of Service guarantees, which can be an excellent choice for site-to-site connectivity.

SSL VPN by Kent Pinkerton
A virtual private network, or VPN as it is commonly known, is a network that uses a public telecommunication infrastructure to provide faraway offices or individual users with secure access to the network of their organization. A virtual private network can be compared with a system of owned or... SSL is an application level transport protocol that transmits data over a standard TCP port. ... One such security measure is the use of SSL VPN for tunneling specific protocols, Secure socket layer virtual private network or SSL VPN is a Virtual Private Network, which extends as connection over...

Cisco CCNP / BSCI Exam Tutorial: Using Distribute Lists by Chris Bryant
To be successful on the BSCI exam and in earning your CCNP, you've got to master route redistribution. This isn't as easy as it sounds, because configuring route redistribution is only half the battle. Whether it's on an exam or in a real-world production network, you've got to identify possible... Async Async interface BRI ISDN Basic Rate Interface BVI Bridge-Group Virtual Interface CTunnel CTunnel interface Dialer Dialer interface Ethernet IEEE 802.3 Lex Lex interface Loopback Loopback interface Multilink Multilink-group interface Null Null interface Serial Serial Tunnel...

Cisco PIX Technology by Benjamin Hargis
Ciso PIX Security Appliance. Cisco PIX Security applications can enforce policies on users and applications. Cisco PIX can protect you from many different network and Internet based attacks. Cisco PIX offers secure connectivity, using methods such as SSHv2 Secure Shell Two and VPN virtual... IPSec or Internet Protocol Security IPSec can be setup for VPN's. ... Cisco PIX can provide you with secure VOIP voice over internet protocol. ... This is really interesting 3G mobile security services. ... VPN client security Layer 2 transparent firewall.

I Know What You Did Last Session: Basic Applied Cryptography by Jeremy Martin
While Janet was sitting in a cyber café sending emails to friends and surfing the web, there was a person sitting three tables away reading each email she sent before they ever got to the email server. During this period of time, the thief was able to get access to her bank account, passwords to... Another advantage of S-HTTP is that it allows for two-way client/server authentication Tunneling encryption (Securing network traffic) IPSec: IP Security Protocol is the most commonly used network encryption for the corporate world.

Securing Your Wireless LAN by Jonathan Coupal
Introduction It has become common practice to deploy wireless networks for convenience applications requiring users to be mobile. Also many "road warriors" have Wi-Fi accounts that let them access the Internet and the corporate network from remote locations. ... Although a less secure VPN option than IPSec, Point-to-Point Tunneling Protocol (PPTP) can be layered over WEP to provide authentication and a second layer of encryption as an option for those who need support for older laptop systems. ... · Finally, most of the more sophisticated access points have adjustable signal strengths,...

Compiling a Free BSD Kernel by Amarjyoti Krishnan
Ever since my college days, I always loved to have my own compiled kernel. It gave me that special feeling of "my machine is better than yours". I am sure each time my new kernel boots up the feeling I have is is the same as what Super Man has when he bashs up the bad people. ... device pty # Pseudo-ttys (telnet etc) device md # Memory "disks" device gif # IPv6 and IPv4 tunneling device faith # IPv6-to-IPv4 relaying (translation) # The `bpf' device enables the Berkeley Packet Filter.