A rogue DHCP server is a Dynamic Host Configuration Protocol DHCP server on a network which is not under the administrative control of the network staff. It is a network device such as a modem or a router connected to the network by a user who may be either unaware of the consequences of their actions or may be knowingly using it for network attacks such as Man in the middle attack man in the middle . As clients connect to the network, both the rogue and legal DHCP server will offer them IP address es as well as default gateway , Domain name system DNS servers, Windows Internet Naming Service WINS servers, among others. If the information provided by the rogue DHCP differs from the real one, clients accepting IP addresses from it may experience network access problems, including speed issues as well as inability to reach other hosts because of incorrect IP network or gateway. In addition, if a rogue DHCP is set to provide as default gateway an IP address of a machine controlled by a misbehaving user, he can sniff all the traffic sent by the clients to other networks, violating network security policies as well as user privacy see man in the middle . Rogue DHCP servers can be stopped by means of intrusion detection system s with appropriate signatures as well as by some multilayer switches, which can be configured to drop the packets. Rogue DHCP servers can be detected using http www.net.princeton.edu software dhcp probe dhcp probe UNIX http www.softperfect.com products networkscanner SoftPerfect Network Scanner Win32 Freeware http technet2.microsoft.com WindowsServer en library 8fa42e83 ec08 4a9b 9057 8909f7ed433e1033.mspx dhcploc.exe Win32 in ResourceKit http www.sqlsecurity.com Tools CommercialTools tabid 71 Default.aspx DHCP Sentry Win32 DHCP Sentry tool http trac.secdev.org scapy wiki IdentifyingRogueDHCPServers Scapy Python https roguedetect.bountysource.com Rogue ... network security de Rogue DHCP ... more details
into the network. Allied Telesis switches have a sub feature of DHCP Snooping, known as ARP Security ... DHCP . This requires an agent on every host that is to be protected. ARP security can guard against ... that DHCP snooping has recorded as being in use by a host connected to the ingress port ... packets. See also Portal Computer Science DHCP ARP Spoofing References Reflist External links http arpon.sourceforge.net ... netsecur print.php 3462211 Uncategorized date February 2011 nl DHCP snooping zh DHCP ... more details
Unreferenced date December 2009 Image peg dhcp from what the hack holland 2005.jpg thumb right Peg DHCP implemented Pegs and network information used at What the Hack 2005. Peg DHCP is a method defined in RFC 2322 to assign IP address es in a context where regular DHCP wouldn t work. The server hands out wooden Clothes pin clothes pegs numbered with the IPs to allocate and an additional leaflet with network information. The client , typically the user, then configures his device accordingly. Even though this Request for Comments RFC , Management of IP numbers by peg dhcp was published on the first of April 1998, it describes, unlike most other April Fools Day RFC s, a regularly used protocol with a serious purpose. During the preparation of Hacking in Progress 1997, the organizers were looking for a robust way to assign IP addresses to the participants. The obvious first choice, DHCP, almost completely defenseless against rogue servers, was not retained considering the traditionally creative use of the network. Instead, for every IP to allocate, the variable host part is written on a wooden peg with waterproof marker. The user would then attach it to the cable connecting that device to the network. The peg is accompanied by a leaflet with further information such as the static net part of the IP address, the netmask , the default gateway , Domain Name System DNS servers, and often also their MAC address es to prevent ARP spoofing . Different subnets, such as Local Area Network LAN and Wireless LAN WLAN are distinguished by different colors used to write on the pegs. Peg DHCP was successfully used on Hacking in Progress 97 and the following events in Holland, including the 2009 ... DHCP and the fixed IP addresses, distributed via Peg DHCP. To obtain an IP address via Peg DHCP, one ... could be handed out. DEFAULTSORT Peg Dhcp Category Internet standards Category Internet protocols Category Hacking computer security Category Hacking programmer subculture de Peg DHCP ... more details
DHCP in the context of computing can stand for Dynamic Host Configuration Protocol , one of the protocols in the TCP IP networking suite Decentralized Hospital Computer Program , an information system used throughout the United States Department of Veterans Affairs Directed Hamiltonian Cycle Problem, an instance of Hamiltonian Cycle Problem for a directed graph disambig ... more details
Udhcpc is a very small DHCP client geared towards embedded systems . The letters are an abbreviation for Micro DHCP Client DHCPc . The program tries to be fully functional and http www.ietf.org rfc rfc2131 RFC 2131 compliant. It is usually distributed as one of the utilities in BusyBox . Other Linux DHCP servers out there such as the ISC DHCP server are targeted at larger systems such as Personal computer PC s with more RAM disk space etc. . As a result, the udhcp package does not have as large a feature set as some of these DHCP packages. Compiled against uClibc , both the server and client binaries are around 18k and when compiled as one combined binary, has a size of 28k. udhcp is a perfect fit for embedded systems requiring DHCP capabilities. The udhcp server lease file is in binary format making the additional storage space required for Internet Protocol IP and MAC address es minimal. It also has the option of storing lease times in absolute form, or relative form, for systems without a clock. The lease file can also be saved periodically or by using a signal for systems with flash memory. The client accepts all options on the command line, and calls external scripts to handle the configuration of interfaces to allow for further flexibility. External links http busybox.net Busybox http packages.debian.org stable source udhcp udhcp in Debian Category Embedded systems Compu stub ... more details
Wiktionarypar snooping Snooping can refer to In computer science Bus sniffing , also known as bus snooping IGMP snooping DHCP snooping In statistics Data snooping bias , a concept in statistics See also Snoop disambiguation disambig ... more details
Superscope may refer to Superscope, an anamorphic widescreen and full screen process Superscope 235 is identical to today s Super 35 . Also, the name of the company that developed Superscope 235 Superscope Inc., founded in 1954 by the Tushinsky Brothers. Superscope, an extension to the Microsoft DHCP DHCP Server Nintendo Super Scope , a computer pointing and controlling device a light gun Superscope story teller , a series of children s book and audiocassette sets dab ... more details
nofootnotes date February 2011 dhcpd also spelled DHCPD or referred to as a DHCP server is a common name for the daemon computer software daemon that allows a Server computing server to provide a Dynamic Host Configuration Protocol DHCP service to a computer network network . Client computing Clients may solicit an IP address IP from a DHCP server when they need one. The DHCP server then offers the lease of an IP address to the client, which the client is free to request or ignore. If the client requests it and the server acknowledges it, then the client is permitted to use that IP address for the lease time specified by the server. At some point before the lease expires, the client must re request the same IP address if it wishes to continue to use it. Issued IP addresses are tracked by dhcpd through a record in the dhcpd.leases file. This allows the server to maintain state over restarts of the dhcp service, which could otherwise lead to duplicate IP addresses being issued when server issued the same IP address again while another client still has the right to use it. A reference implementation of dhcpd is developed by the Internet Systems Consortium and is supported on Solaris operating system Solaris , FreeBSD , OpenBSD , NetBSD and Linux . External links http oob.freeshell.org nzwireless dhcpd.html Configuring dhcpd on a wireless access point http www.isc.org software dhcp dhcpd section in the ISC website ftp ftp.isc.org isc dhcp Official FTP repository http www.linuxcommand.org man pages dhcpd8.html dhcpd man page http www.daemon systems.org man dhcpd.conf.5.html dhcp.conf man page Category Servers Category Unix network related software network software stub ... more details
Protocol UDP , Dynamic Host Configuration Protocol DHCP and Trivial File Transfer Protocol TFTP and of concepts ... Proxy DHCP in order to receive information about available PXE boot servers. After parsing the answer ... PXE clients it could be specified using BOOTP without any need of a proxy DHCP, but a Trivial File ... standard with the implementation. Protocol The PXE protocol is approximately a combination of DHCP and TFTP, albeit with subtle modifications to both. DHCP is used to locate the appropriate boot server ... extended with PXE specific options extended DHCPDISCOVER to port 67 UDP DHCP server port . The PXE options identify the firmware as capable of PXE, but they will be ignored by standard DHCP servers. If the firmware ... configurations. Proxy DHCP If a PXE redirection service Proxy DHCP receives an extended DHCPDISCOVER , it replies by with an extended DHCPOFFER to the client to port 68 UDP DHCP client port ... menu a timeout to launch the first boot menu entry if it expires. The Proxy DHCP service may also be run on the same server computing host as the standard DHCP service. Since both services cannot share port 67 UDP, the Proxy DHCP runs on port 4011 UDP and expects the extended DHCPDISCOVER packets from PXE Clients to be DHCPREQUESTs. The standard DHCP service has to send a special combination of PXE options in its DHCPOFFER, so the PXE client knows to look for a Proxy DHCP on the same host ... address perhaps from a DHCP server . It multicast s or unicast s a small DHCP small REQUEST big packet extended with PXE specific options extended small DHCP small REQUEST big to port 4011 UDP or broadcasts ... DHCP small REQUEST may be a small DHCP small INFORM . A PXE Boot Server receiving an extended small DHCP small REQUEST configured for the requested type and client architecture responds with an extended small DHCP small ACK big including the complete file path to download the NBP via TFTP. PXE Boot ... small DHCP small OFFER . A 2.1 version PXE Boot Server supports Boot Integrity Services ref name ... more details
IPstack DHCPv6 is the Dynamic Host Configuration Protocol for IPv6 . Although IPv6 s IPv6 Stateless address autoconfiguration stateless address autoconfiguration removes the primary motivation for DHCP in IPv6, DHCPv6 can still be used to assign addresses statefully if the network administrator desires more control over addressing. It can also be used to distribute other configuration information as is the practice in IPv4. A notable case is Domain Name System servers used on a network, albeit other mechanisms exist for this in the Neighbor Discovery Protocol . ref RFC 4339, IPv6 Host Configuration of DNS Server Information Approaches , J. Jeong February 2006 ref IETF Standards RFC 3315, Dynamic Host Configuration Protocol for IPv6 DHCPv6 RFC 3319, Dynamic Host Configuration Protocol DHCPv6 Options for Session Initiation Protocol SIP Servers RFC 3633, IPv6 Prefix Options for Dynamic Host Configuration Protocol DHCP version 6 RFC 3646, DNS Configuration options for Dynamic Host Configuration Protocol for IPv6 DHCPv6 RFC 3736, Stateless Dynamic Host Configuration Protocol DHCP Service for IPv6 RFC 5007, DHCPv6 Leasequery Implementations http wide dhcpv6.sourceforge.net WIDE DHCPv6 , a DHCPv6 implementation for BSD and Linux http klub.com.pl dhcpv6 Dibbler , a portable DHCPv6 implementation for Linux and Windows http www.isc.org software dhcp ISC DHCP , version 4.1.0 and later, for Solaris, Linux and BSD https fedorahosted.org dhcpv6 wiki Linux DHCPv6 no new development, obsoleted by ISC DHCP http blogs.technet.com teamdhcp archive 2007 01 23 dhcpv6 behaviour in windows vista.aspx Microsoft Windows Vista and later , built in Microsoft Windows External Links http ipv6int.net software index.html dhcpv6 IPv6 Intelligence DHCPv6 , comparison of DHCPv6 packages and implementations References reflist IPv6 compu network stub Category IPv6 de Dynamic Host Configuration Protocol DHCPv6 es DHCPv6 ja DHCPv6 pt DHCPv6 ... more details
machine. The integrated DHCP server supports static and dynamic DHCP leases and multiple networks and IP ranges. It works across BOOTP relays and supports DHCP options including RFC 3397 DNS search lists. Machines configured via DHCP have their names automatically included in the DNS and the names ... nameservers from ppp or dhcp configuration. It will automatically reload this information if it changes ... more details
MAC Forced Forwarding MACFF is used to control unwanted broadcast traffic and host to host communication. This is achieved by directing network traffic from hosts located on the same subnet but at different locations to an upstream gateway device. This provides security at Layer 2 since no traffic is able to pass directly between the hosts. MACFF is suitable for Ethernet networks where a layer 2 bridging device, known as an Ethernet Access Node EAN , connects Access Routers to their clients. MACFF is configured on the EANs. MACFF is described in RFC 4562, MAC Forced Forwarding A Method for Subscriber Separation on an Ethernet Access Network. Allied Telesis switches implement MACFF ref http www.alliedtelesis.com media datasheets howto macff w dhcp vlans sd b.pdf Using MACFF with DHCP Snooping ref using DHCP snooping to maintain a database of the hosts that appear on each switch port. When a host tries to access the network through a switch port, DHCP snooping checks the host s IP address against the database to ensure that the host is valid. MACFF then uses DHCP snooping to check whether the host has a gateway Access Router. If it does, MACFF uses a form of Proxy ARP to reply to any ARP requests, giving the router s MAC address. This forces the host to send all traffic to the router, even traffic destined to a host in the same subnet as the source. The router receives the traffic and makes forwarding decisions based on a set of forwarding rules, typically a QoS policy or a set of filters. References reflist Category Internet protocols Category Internet standards ... more details
by all major browsers. ref Chromium Issue WPAD proxy autodetect discovery does not test DHCP https ... DHCP option 252 https bugzilla.mozilla.org show bug.cgi?id 356831 ref WPAD was first included with Internet ... Protocol DHCP or the Domain Name System DNS Before fetching its first page, a web browser implementing this method sends the local DHCP server a DHCPINFORM query, and uses the URL from the WPAD option in the server s reply. If the DHCP server does not provide the desired information, DNS is used ... not be live URLs. Notes DHCP has a higher priority than DNS if DHCP provides the WPAD URL, no DNS lookup is performed. Notice that Firefox and Chrome do not support DHCP, only DNS ref Chromium Issue WPAD proxy autodetect discovery does not test DHCP https code.google.com p chromium issues detail?id 18575 ref ref Firefox bug Proxy autodiscovery doesn t check DHCP option 252 https bugzilla.mozilla.org ... of the configuration file is always wpad.dat . For the DHCP protocol, any URL is usable. For traditional ... the only browsers offering support for both the DHCP and DNS method, the DNS method is supported ... to use DHCP, the server must be configured to serve up the site local option 252 auto proxy config ... can set up a DHCP server that hands out the URL of a malicious PAC script. If the network is company.co.uk .... Thus, an administrator should make sure that a user can trust all the DHCP servers in an organisation ... in your network Scenario on how to configure DHCP, DNS and PAC file in a windows network ... more details
tinc is a self routing, mesh networking protocol, used for data compression compressed , encrypted , virtual private networks . It was started in 1998 by Guus Sliepen , Ivo Timmermans , and Robert van der Meulen , and released as a GPL licensed project. Supported network transports IPv4 IPv6 Virtualized Ethernet via TUN TAP driver Embedded technologies OpenSSL encryption library zlib best compression LZO fast compression Projects that use tinc Freifunk tinc was enabled in their routers as of October 2006 http www.the mesh.org tiki read article.php?articleId 39 . OpenWRT has an installable package for tinc. External links http www.tinc vpn.org Homepage http tinc vpn.org examples simple bridging with dhcp server side Debian GNU Linux tinc dhcp bridging setup http www.vanheusden.com Linux tinc mini howto.html Quick & Dirty TINC setup http en.gentoo wiki.com wiki Tinc Gentoo Linux tinc setup compu network stub VPN Category Internet protocols Category Routing protocols Category Network related software ... more details
Address translation or address resolution may refer to Address Resolution Protocol or ARP, a computer networking protocol used to find out the hardware address of a host usually a MAC address , when only the network layer address is known Reverse Address Resolution Protocol or RARP, a protocol used to find the network layer address of a host, based only on the hardware address. This protocol has been rendered obsolete by both BOOTP and DHCP Domain name system or DNS, which is used to translate network addresses to human recognizable domain names CPU cache Address translation virtual to physical address translation disambig ... more details
to by many vendors as Third Generation , is that many network service configurations such as DNS and DHCP ... files between switches, DHCP servers, DNS servers, and IP space tracking spreadsheets would show ... it to currently deployed stand alone DNS and DHCP servers. The software model manages other Domain Name System DNS and Dynamic Host Configuration Protocol DHCP servers, but those servers are not part .... Appliance model The appliance model is a one shop solution where the database, DNS and DHCP ... on existing DNS or DHCP servers to allow them to be controlled by the management appliance .... Internal DNS and DHCP services are provided by appliance units that are owned and maintained by the vendor ... more details
NOTOC Infobox Software name Nimbus logo screenshot caption developer Kate Keahey, Tim Freeman, et al. released TP2.2 2009 01 09 frequently updated yes programming language Java programming language Java , Python programming language Python operating system Linux language genre Cloud computing license Apache License Apache License version 2 website http www.nimbusproject.org Nimbus is an open source toolkit that, once installed on a Cluster computing cluster , provides an infrastructure as a Service cloud computing cloud to its client via Web Services Resource Framework WSRF based or Amazon Elastic Compute Cloud Amazon EC2 Web Services Description Language WSDL web service Application programming interface APIs . Nimbus supports the Xen hypervisor and virtual machine schedulers Portable Batch System PBS and Sun Grid Engine SGE . It allows deployment of self configured virtual clusters via contextualization. ref Keahey, K., Freeman, T. 2008 . Contextualization Providing One Click Virtual Clusters , 2008 Fourth IEEE International Conference on eScience, pp.301 308. doi http doi.ieeecomputersociety.org 10.1109 eScience.2008.82 10.1109 eScience.2008.82 ref It is configurable with respect to scheduling, networking leases, and usage accounting. Requirements Xen 3.1 or 3.2 Java programming language Java 1.5 Python programming language Python 2.3 ebtables filtering tool for a bridging firewall DHCP server Globus Toolkit Globus 4.0.x Java container See also Xen hypervisor Amazon Elastic Compute Cloud Amazon EC2 computing and storage provider Eucalyptus computing Eucalyptus alternative open source IaaS software References references External links http www.nimbusproject.org Nimbus website http workspace.globus.org clouds Science Clouds available http www.xen.org Xen hypervisor http ebtables.sourceforge.net ebtables software https www.isc.org software dhcp ISC DHCP software Cloud computing Category Cloud infrastructure Category Free software programmed in Java Category Free sof ... more details
A UDP Helper Address is a special router configuration used to forward broadcast address broadcast network traffic from a Client computing client machine on one subnetwork subnet to a server in another subnetwork subnet . This is used primarily in business environments as way to save money by not having to buy a server computing server for each subnet. Usage Example In networking every machine is given a unique IP address . Groups of machines with similar addresses are considered to be part of the same logical subnet. One method of assigning IPs is Dynamic Host Configuration Protocol DHCP in which IPs are given out by single server machine. Normally this machine is on the same subnet as its clients and can answer to their broadcasted DHCP requests. However, in some situations the server is on a different subnet. The problem with this is that most routers in their default state do not pass broadcast address broadcast messages to machines outside the physical subnet. Such messages are essential to the normal operation of certain network services such as DHCP. To resolve this a UDP Helper Address is established in the router configuration to forward broadcast network traffic from the PCs to the DHCP server. The DHCP server responds with a unicast IP address from the given range. It reserves the IP address for the time it can calculate that it can get a response. If the client responds again with a broadcast it distributes the IP address. A helper address can also be used to forward certain other User Datagram Protocol UDP network configuration messages. As a result a UDP helper address is sometimes created to allow two server machines to communicate across different subnets. Implementation Cisco Cisco s first implementation of this protocol was introduced in version 10 of their router software. ref cite web url http www.cisco.com en US docs ios 12 1 iproute command reference 1rdipadr.html title Cisco IOS IP and IP Routing Command Reference, Release 12.1 IP Addressing C ... more details
Orphan date February 2009 IPstack Refimprove date October 2008 Boot Service Discovery Protocol BSDP is an Apple developed, standards conforming extension of Dynamic Host Configuration Protocol DHCP ref cite web date 2003 12 08 url http opensource.apple.com source bootp bootp 198.1 Documentation BSDP.doc title NetBoot 2.0 Boot Service Discovery Protocol BSDP publisher Apple Inc. Apple Inc accessdate 2010 07 22 format DOC ref . It allows Macintosh computers to Booting boot from bootable images on a Computer network network instead of local storage media such as Compact Disc CD , DVD , or Hard disk drive hard disk . The DHCP options used are the vendor specific information option number 41, also called vendor encapsulated options and vendor class identifier option number 60 . There are three versions of BSDP, though usually version 1.0 is used. All versions enable a Client computing client to choose from several bootable images offered by a Server computing server . The http www.opensource.apple.com darwinsource tarballs apsl bootp 133.8.tar.gz reference implementation of BSDP is Darwin operating system Darwin s Bootstrap Protocol BOOTP server, which is part of Mac OS s NetBoot feature. Description Contents of DHCP Vendor Class Identifier The DHCP server and client send a vendor class option that contains an ASCII encoded string with three parts delimited by a character. The first part is AAPLBSDPC , which advertises BSDP capability. The second part is the client s architecture PowerPC ppc or X86 i386 . The third part is a system identifier. For example, an Intel based iMac sends AAPLBSDPC i386 iMac4,1 as its vendor class. Contents of DHCP Vendor Encapsulated Options The main communication takes place through the DHCP vendor encapsulated options, which contains one or more concatenated fields. Each field consists of class wikitable class hintergrundfarbe6 Byte Position Content 0 Type of field 1 Length n of field 2 to n 2 Data The following table describes the possible ... more details
Equal Device Network EDN is a proposal that describes how to interconnect devices in an unified networking model. Purpose of EDN Simplify the computer peripherals physical cabling. Flex devices interconnections by application protocols. Make all devices smarter to do more possible applications and functionality. EDN concept Unified wired interface Light Peak replace RJ45, RJ11, PS 2, USB, 1394, ATA, SATA, SCSI, VGA, DVI, HDMI, etc. Unified wireless interface Wi Fi replace IR, bluetooth, etc. The network can be wired, wireless or hybrid. Switches and routers are optional in the network. DHCP server is optional in the network. All device nodes can communicate directly with each other even there is no switch in the middle. The network is dynamic, with any node can be hot plugged in or plugged off. All device nodes are equal. Compare to master and slave model . EDN node implementation All device nodes shall implement application protocol s over IP layer EDN monitor A visual monitor as a node itself in a specific EDN lists all device nodes in the EDN. With help of another node, such as a keyboard, it can monitor, assign, configure, or command each device node. It s useful especially for those devices which don t have displays themselves, such as keyboard, mouse, hard drive, etc. EDN node addressing DHCP When a device is power up, it obtains an IP address in the existing network. If DHCP fails, the device assign itself an IP address uniquely in the network. EDN Session First, in P2P mode, two device nodes on the network shall establish transmit receive relation in broadcast model, establishment is optional. Second, two device nodes communicate with each other on a specific application protocol over IP layer. Third, session is ended when necessarily. EDN sample applications On a network consists multiple computers, keyboards, mice, hard drives, monitors, phones, earphones, remote controls, TVs, cameras, card readers, etc. Because all nodes are equal, a keyboard can choose ... more details
Unreferenced date December 2009 Auto configuration is the automatic computer configuration configuration of devices without manual intervention, without any need for software configuration programs or jumper computing jumper s. Ideally, auto configuring devices should just plug and play . Autoconfiguration has been made common because of the low cost of microprocessor s and other embedded controller devices. Configurations may be stored in NVRAM , loaded by a host processor, or negotiated at system initialization time. In some cases, hot swap hot pluggable devices may be able to renegotiate their configuration. Example of auto configuring devices Universal Serial Bus USB Example of auto configuring devices and protocols Dynamic Host Configuration Protocol DHCP Zeroconf See also Universal Plug and Play FPGA AutoConfig Amiga DEFAULTSORT Auto Configuration Category Computer peripherals Category Computer configuration ru tr Otomatik yap land rma ... more details
PRL may refer to Parameter Request List, a DHCP option Parti R formateur Lib ral , a former Belgian political party Penn Eastern Rail Lines Pennine Radio Limited Physical Research Laboratory India s national centre for research in space and allied sciences Physical Review Letters journals in physics Pattern Recognition Letters scientific journals Polo Ralph Lauren a luxury goods company by designer Ralph Lauren Polska Rzeczpospolita Ludowa People s Republic of Poland Preferred Roaming List used in CDMA phones Professional Rugby League , the top tier, professional Rugby Union rugby league in Russia Prolactin hormone Proportional reduction in loss a measure of reliability disambig cs Prl de PRL es PRL fr PRL it PRL he PRL pl PRL ujednoznacznienie ru PRL sr PRL sv PRL ... more details
ICMP Internet Router Discovery Protocol IRDP uses Internet Control Message Protocol ICMP router advertisements and router solicitation messages to allow a host to discover the addresses of operational routers on the subnetwork subnet . It basically consists of 2 Message Types see Internet Control Message Protocol List of permitted control messages incomplete list this list used for discovering local routers. The message type 9 is sent periodically or on request using a message of type 10 to the local subnet from the local router s to propagate themselves. On boot, the client may send a ICMP Message of type 10 to ask for local routers. When a client receives a message type 9, they are adding the router to their local routing table. See also ICMPv6 DHCP External links RFC 1256 ICMP Router Discovery Messages Category Routing protocols compu network stub pl ICMP Router Discovery Protocol ru IRDP ... more details
Weasel date March 2009 ActiveArmor is a hardware Firewall networking firewall designed by Nvidia that s built into their higher range nForce4 nForce4 Ultra chipset motherboard s. It can reduce CPU load by making some simple OSI model layer 2 checks on incoming packets and discarding obviously malicious packets before they are sent to the CPU. It is an effective protection against some same subnet based attacks such as ARP poisoning , rogue DHCP servers and Spoofing attack spoofed MAC address es. Unfortunately it is essentially broken in its current implementation, with serious issues with data corruption and memory leak . It is so bad that programs such as Torrent actually warn users at start up to disable it. ref http www.utorrent.com faq incompatible software faq1 Torrent Incompatible Software FAQ ref References references Category Nvidia compu hardware stub ... more details
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