DHCP
DHCP
In the context of computer networking, Dynamic Host Configuration Protocol (DHCP, currently implemented as DHCPv6) is a client-server networking protocol. A DHCP server provides configuration parameters specific to the DHCP client host requesting, generally, information required by the client host to participate on an IP network. DHCP also provides a mechanism for allocation of IP addresses to client hosts.
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DHCP Related Products
McAfee UTM Firewall (formerly Secure Computing SnapGear) is a complete office network-in-a-box Internet security appliance for small and medium-size businesses (SMBs). It features wide-area networking tools that you would normally only see with enterprise-class devices. Because the last thing SMBs need is another single-purpose security appliance to add to their network.
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3e525A-3 Wireless Access Point Maximum security and flexibility with outdoor or indoor use. The 3e525A-3 Wireless Access Point is packaged in a rugged NEMA 4/IP 67 weatherproof enclosure and conforms to 802.11a, 802.11b and 802.11g wireless standards.
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The AppGate Distributed Device Firewall protects windows systems by checking all traffic to and from the network. It can be used as a standalone product or as a companion to the AppGate VPN clients. Accompanied by an AppGate client, it can be configured to allow only one outbound connection, the authorised and encrypted secure tunnel, when connected to an AppGate server.
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DHCP Related Industry News
Another big Patch Tuesday coming next week For the second time in three months, Microsoft will release a dozen security fixes as part of its monthly Patch Tuesday release cycle. In an advance notification, the Redmond, Wash., company said today that it will distribute 12 patches next week - the same number it released in June. Ten of the fixes will affect Microsoft Windows, with a maximum severity rating of critical. The remaining pair of patches will be for Microsoft Office, also with a maximum......
[more] DoS exploit for Windows XP firewall, ICS in the wild Windows XP platforms running a shared internet access service are at risk from an in-the-wild remote DoS exploit, vulnerability management firm nCircle reported Sunday. "When the (additional information) section of the DNS Datagram contains two null bytes, an error occurs at the instruction "mov dl, eax," nCircle's Tyler Reguly said on the company blog. "This causes the service and its host process (svchost.exe) to die.&quo......
[more] Standards Group OKs E-Mail Validation Spec The Internet Engineering Task Force (IETF) has adopted a vendor-developed specification designed to detect e-mail with bogus header information. The technology could help reduce spam and phishing attacks that clog Internet traffic. Yahoo was the initial developer of the spec, called DomainKeys Identified Mail (DKIM), but other participants joined the effort, including Cisco, Sendmail and PGP Corporation for later revisions. The hope is that the specifi......
[more] New trojan in mass DNS hijack Researchers have identified a new trojan that can tamper with a wide array of devices on a local network, an exploit that sends them to impostor websites even if they are hardened machines that are fully patched or run non-Windows operating systems. The malware is a new variant of the DNSChanger, a trojan that has long been known to change the domain name system settings of PCs and Macs alike. According to researchers with anti-virus provider McAfee's Avert Labs, t......
[more] New DNS changing malware detected Trend Micro has detected a new DNS changing form of malware which poisons other hosts on the local subnet installing a rogue Dynamic Host Configuration Protocol (DHCP}server on the network. Technical Communications spokesperson JM Hipolito explained that the DHCP is a protocol used to disseminate required information to network clients in order to operate within an IP network. Once a user connects to a network, it will send a request to a DHCP server (the metho......
[more] Getting network baselining right While simple in concept, network baselining is often misunderstood. Baselining involves recording network traffic and performance, saving it for future reference and/or reviewing it to see traffic patterns. Once baselines are saved, they can be used as a benchmark with which to compare other traffic patterns. The technique provides the network administrator insight into expected behavior on the network and subsequently, the ability to notice changes. People ofte......
[more] Three Free, Easy Ways To Protect Your Network Whether the Conficker worm booms or fizzles, take it as a reminder to keep your networks safe. You could spend money on a security consultant--which isn't such a bad investment if helpful--but here are three free tricks to increase your network's security. Use OpenDNSUse OpenDNS Internet traffic gets routed through IP addresses; the text you type as a URL only sits on top of those numbers. Normally, when you type "pcworld.com," it gets ref......
[more] New malware overwrites Adobe software updaters For the first time security researchers have spotted a type of malicious software that overwrites update functions for other applications, which could pose additional long-term risks for users. The malware, which infects Windows computers, masks itself as an updater for Adobe Systems' products and other software such as Java, wrote Nguyen Cong Cuong, an analyst with Bach Khoa Internetwork Security (BKIS), a Vietnamese security company, on its blog.......
[more] Security Manager's Journal: Buried in SIEM configuration I mentioned in my previous column that in my new job, I inherited a project to implement a security incident and event management (SIEM) tool. In response, several readers e-mailed to tell me about their experiences. Here's what I've learned in tackling this project over the past couple of weeks. There are a few different ways to use SIEM. It can alert you to anomalous behavior and malicious code. By pulling in data from our antivirus sca......
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