Linux Network Security - Page 52

Discover Network Security News

Using a five-layer filter to cut spam

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We have elected to put a substantial portion of our defenses on the client rather than the server as it makes our system less vulnerable. It is annoying to administer, but worth the effort as it has prevented virus- and worm-based . . .

Anthony Pell
Dec 17, 2003

Year of spam blamed on Sobig

The Sobig worm is to thank for a massive increase in spam e-mail during 2003 and the problem of unsolicited commercial junk e-mail is set to get worse in 2004.. . .

Anthony Pell
Dec 16, 2003

Complacency is IT security's worst enemy

A new report issued by Datamonitor found that although 69 percent of companies do not feel that they are at risk of being the victim of a specific and targeted attack, more than 77 percent reported that they had fallen victim to a worm or a virus. Only 18 percent of those surveyed reported no security breach at all.. . .

Anthony Pell
Dec 16, 2003

Review: Wireless Hacks

I've been wanting to get my hands on this book ever since I got the press release announcing this latest addition to the "Hacks Series". When the O'Reilly folks sent us a couple of copies, I've already had a book or . . .

Anthony Pell
Dec 16, 2003

Packet Sniffing on Layer 2 Switched Local Area Networks

Packet sniffing is a technique of monitoring network traffic. It is effective on both switched and nonswitched networks. In a non-switched network environment packet sniffing is an easy thing to do. This is because network traffic is sent to a hub . . .

Anthony Pell
Dec 15, 2003

IPv6 will need security, too, experts warn

Security has been one of the selling points for the new Internet protocol, but IPv6 is not inherently secure, say those planning its implementation. "The biggest challenge we have of the next decade or so is security," Latief Ladid, president of . . .

Anthony Pell
Dec 11, 2003

Worm hits Windows-based ATMs

Automated teller machines at two banks running Microsoft's popular Windows software were infected by a computer virus in August, the maker of the machines said Monday.. . .

Anthony Pell
Dec 09, 2003

Wireless Network Security Concerns Dominate Wi-Fi Show

As a wireless conference and trade show winds down this week, dueling speakers at the show told audiences that wireless was both ready -- and not so ready -- for prime time in the enterprise. At the Wi-Fi Planet Conference . . .

Anthony Pell
Dec 09, 2003

New era of security cooperation

Who would have thought that Microsoft would be in a position of snubbing Linux for 'security' reasons? It seems very possible that Redmond would like to have vast swathes of Microsoft and Cisco networking disable all Linux traffic and connectivity by default.. . .

Anthony Pell
Dec 08, 2003

SSL VPN Case Study

When more and more doctors started asking for access to patients' test results online, Sydney Adventist Hospital explored alternatives to some of the solutions being used elsewhere in healthcare. The hospital's first priority was to keep patients' health information secure and . . .

Anthony Pell
Dec 05, 2003

Network Security: Double Impact

Should there be two security guards, one to spot potential intruders to your house and another one to stop him from getting in? If you transpose this to the enterprise-network situation, we are faced with a classic debate challenging CIO's and . . .

Anthony Pell
Dec 05, 2003

Expert exposes security flaws

Kevin Curran, an IT lecturer at the University of Ulster's Magee campus, said companies across the province using wireless computer networks were leaving themselves open to hackers who can use their systems to surf the net for free - even for . . .

Anthony Pell
Dec 04, 2003

Former Intel exec sets Wi-Fi crowd straight

"Those of you that are involved in creating these products, I don't know what the hell you are thinking of. Are you designing these products for the fellow in the next cubicle, or for consumers?" Vadasz asked a crowd of WLAN . . .

Anthony Pell
Dec 04, 2003

Heavy squalls of blended worms to hit next year

Net users can expect a growth in attacks of Unix systems next year, not to mention more Blaster-style worms capable of infecting computers without using email.. . .

Anthony Pell
Dec 03, 2003

If security keeps you up at night, take this pill

Network security. It's a bad dream and getting more nightmarish all the time. Aside from the mounting attacks by hackers, think also of how increasingly complex and far flung the territory is you must now defend. Sure, maybe you have your . . .

Anthony Pell
Dec 03, 2003

Security in 6 Easy Steps: Wireless

Change the System ID: Devices come with a default system ID called the SSID (Service Set Identifier) or ESSID (Extended Service Set Identifier). It is easy for a hacker to find out what the default identifier is for each manufacturer of . . .

Anthony Pell
Dec 02, 2003

Sniffed password used for Debian server compromise

A member of the Debian GNU/Linux system administration team believes there is an unknown local root exploit for the Linux kernel circulating in the wild and says it may have been used to compromise four servers belonging to the free software . . .

Anthony Pell
Dec 01, 2003

Wireless World Gets a New Worry: Viruses

Telecommunications companies spend as much as $8 billion a year fixing phones with programming errors, faulty mechanics and other problems. Now some are scrambling to prevent virus attacks that could cost carriers millions of dollars more in repairs and lost business.. . .

Anthony Pell
Dec 01, 2003

Routers don't protect by default

Routers are a good way to protect your computer from malicious attacks, but they are ineffective if not configured correctly. For example, wireless routers are inherently less secure than wired ones since they broadcast data back and forth between your computer . . .

Anthony Pell
Nov 28, 2003

DoS attack blamed for Internet outage

A denial of service attack on security website Zonelabs has been blamed for major disruption of the Internet over the past couple of days. According to an anonymous NTL employee's posting on www.frogger.uklinux.net, the DoS attack was launched from 'someone in . . .

Anthony Pell
Nov 27, 2003

Linux Network Security - Page 52

Harnessing Proxies for Enhanced Threat Intelligence: A Guide with Open Source Tools

Understanding HTTP Proxy Servers: A Vital Linux Network Security Tool

Exploring Vulnerability Scanners: Tools & Strategies for a Secure Network