Radius and 802.1X Securing Network Access with 802.1X, Radius, and LDAP

Mar 01, 2005

The Radius protocol is typically used to authenticate users in dial-up scenarios. But Radius is also useful in LAN environments: in combination with 802.1X, Radius forces users to authenticate at a low level before the switch opens up a port.

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Charly's Column The Sysadmins Daily Grind: OpenNTPD

Feb 01, 2005

On vacation we may be happy just to check the position of the sun,but computers need a more accurate measure of time. Luckily, there are atomic clocks that can receive time signals by radio and off the Internet.

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OpenVPN Safe WLAN Networking with an Encrypted OpenVPN Tunnel

Feb 01, 2005

Wireless networks are practical but dangerous at the same time.WEP encryption is unlikely to stop an attacker. But help is at hand in the form of add-on security measures such as an encrypted OpenVPN tunnel.

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Bridgewall Implementing a bridging-level firewall

Jan 01, 2005

Firewalls are typically implemented as routers,but it doesn’t have to be that way. Bridging packet filters have a number of advantages,and you can add them to your network at a later stage without changing the configuration of your network components.

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Shorewall Configuring Netfilter/iptables with Shorewall

Jan 01, 2005

When users think about their workstations at home, they often forget about security. But danger is out there,waiting to pounce on the unsuspecting. Shorewall helps everyday Linux users keep the intruders away.

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Firewalls Intro Firewalls for the everyday

Jan 01, 2005

Firewalls are becoming evermore sophisticated. Luckily, the tools for managing firewalls are becoming simpler and more accessible for ordinary users

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Issue 18: Free From XP/Special Editions

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