relay block list

TechRepublic Resources

• sort by:
• Relevance
• Date
• Popularity

Replacing SMTP: A proposal

Jonathan Yarden has long called for a replacement for SMTP in his columns, but now he's doing more than pay lip service to his crusade. In this edition of Internet Security Focus, find out his proposal for replacing SMTP, and see what he says it needs to be able to...

Tags: SMTP, Jonathan Yarden, Spam, E-mail servers, Advertising & Promotion, e-mail, Relay Block List, Simple Mail Transfer Protocol, Internet Security Focus Newsletter, NSSMTP, Online Communications

Technical articles 2006-08-24

Tech Tip: Stop junk e-mail with DNS

Jonathan YardenThe United States and Europe both agree thatjunk e-mail is a serious threat to the Internet and that newprotocols and methods must be developed to combat it. As antispamlaws work their way through the governments of the world, researchorganizations and individuals continue to work on antispam methodsthat are compatible...

Tags: DNS, junk e-mail, relay block list, RMX, server

Technical articles 2003-12-08

Additional Resources

On the Capacity of the Broadband Relay Networks

The paper studies the capacity of the OFDM and the OFDMA relay networks. Two relay schemes, amplify-and-forward AF relay and decode-and-forward DF relay are analyzed and compared for both OFDM and OFDMA relay networks. A relay node selection algorithm is proposed for OFDMA relay network. Numerical results show that under...

Tags: Network, Broadband, OFDMA, Relay Node Selection Algorithm, OFDM, Wireless

White papers 2004-06-09

Practical Guide to Frame Relay

Frame relay is a technique used to transport data from locations to location, just like T-1 lines or ISDN connections do. In frame relay, there are a number of locations on the network that can send and receive data. These connections are known as Ports. Each location that needs access...

Tags: Frame Relay, Network Technology, Networking

White papers

Block Senders in Outlook Express 6

How can I block a whole domain in my block senders list? Can I use the "*" wildcard as in *@hotmail.com?Yes, you can indeed use a wildcard.Now where do I find my domain list?Okay, then the wild card is not working for me. I am still getting junk...

Tags: Microsoft Outlook, Microsoft Outlook Express, Microsoft Outlook Express 6.0, myrt, software

Q&A 2005-03-01

Relay Timer (zip)

Relay Timer is a powerful tool for NCD ProXR relay controller boards. It supports up to 16 relay boards. Each board has 16 relays. Each relay can be programmed separately and turned on/off manually. The status of all relays can be shown. It can control the relays with very precise...

Tags: Board, Relay, Serial Port Tool, Relay Timer, Corporate Governance, Business Operations, Corporate Law

Software downloads 2008-03-24

Frame Relay: All You Want to Know

Frame Relay is a high performance WAN encapsulation method that has become one of the most popular technologies in use. Frame Relay puts data in a variable size unit called a frame and leaves any necessary error correction up to the end-points. This provides for a high speed, low overhead,...

Tags: Frame Relay, Network Technology, Networking

White papers

5 Exchange Server security tips

Obviously there are many different things that you can do tosecure and Exchange Server. Some of the security techniques are naturally moreimportant than others. Here is a list of tips you can use to secure yourExchange server.Relay restrictionsProbably one of the most important, if not the mostimportant, things that you...

Tags: Brien M. Posey MCSE, IP address, Microsoft Exchange Server, security, server, spammer

Technical articles 2006-09-27

Help for Wan Networks

Hello I am software developer ,I need to develop a software which will be connected through frame relay my database is in SQL server.There is suppose to be 1 main office and 10 branches connected through frmae relay.Please suggest me the architechture of the network.You shouldnt be conserned whether...

Tags: arshadkindia@..., frame relay, it management, network, WAN

Q&A 2005-05-15

Configure frame relay operations on Cisco routers

This sample chapter, taken from Cisco Press' Cisco Frame Relay Solutions Guide, explains how to configure a basic Frame Relay network involving Cisco equipment, as well as how to monitor and troubleshoot using relevant Cisco IOS commands. Learn how to configure basic Frame Relay operations on Cisco...

Tags: Chapter, Cisco IOS, Cisco Router, Router, Cisco Systems Inc., Frame Relay, Networking

Book chapters 2005-08-25

Subchannel Assignment in OFDM Relay Nodes

The paper considers a source-relay-destination link in which the relay node is allowed to reassign the input subchannels to different output subchannels. In particular, the authors consider a channel-aware relay node and compute the subchannel reassignment that optimizes a selected performance criterion. The numerical results suggest that optimized subchannel reassignment...

Tags: Channel, Nokia Corp., Node, OFDM, Performance Management, Wireless, Human Resources, Workforce Management

White papers 2006-02-23

Relay Attacks on Bluetooth Authentication and Solutions

This paper describes relay attacks on Bluetooth authentication protocol. The aim of these attacks is impersonation. The attacker does not need to guess or obtain a common secret known to both victims in order to set up these attacks, merely to relay the information it receives from one victim to...

Tags: Springer Science+Business Media, Attack, Bluetooth Authentication Protocol, Bluetooth, Wi-Fi, Security, Wireless

White papers 2004-10-29

SMTP Gateway Relay Configuration:

hello,i would like to configure smtp relay in the cisco pix 515e.i tested smtp from outside from telnet cmd it's working fine.but want to configure smtp relay in the pix?could any one give me the steps plz?thank u in adv.Vijay

Tags: p.vijayreddy@..., SMTP

Discussion threads 2007-02-26

Problem in DHCP Relay Agent

ToDear Engineers MCSE Subject :: Help required in Problem relating to MCSE RRAS Relay Agent with due respect it is stated that i am facing the problem in Relay Agent of Routing and Remote access console sub feature. I have the course m

Tags: networking, windows, Relay Agent, aman0999@..., DHCP, DHCP Server, IP, server, subnet

Discussion threads 2006-11-27

message non delivery Exch 5.5

A certain e-mail server is refusing mail from our company's Exch 5.5 server with the following message. Anybody know how to fix this? Thanks!553 Your computer does not have a hostname, access blockedI believe that is a blocking rule on the target email server. Sometimes domains are black...

Tags: DNS, e-mail, e-mail server, Exch 5.5, firewall, IP, rcoolman, server

Q&A 2005-05-25

Overview of Frame Relay

Frame relay is a synchronous HDLC protocol based network. Data is sent in HDLC packets, referred to as "frames". The diagram below of an HDLC frame may be familiar, since without adding specific definitions of how the Address, Control and CRC is used, the diagram is applicable to IBM's SDLC,...

Tags: HDLC, Data, Frame Relay, Networking

White papers

Block Internet Access

i have heard that a website or a set of web address can be blocked by configuring the DNS server as well as host file..can anyone tell me how to block the access to internet, with the help of DNS server..i have heard that we shud make a list of...

Tags: Domain names, Firewalls, mayu_2710@..., DNS server, server

Discussion threads 2007-06-01

Hostblock (exe)

Hostblock allows to create and manage a list of host addresses being blocked with the hosts file. Of course, a browser plugin is included. It allows you to simply block addresses from the context menu. Additionally, you can im- and export block lists and even pass them on to computers...

Tags: Advertisement, Web Browser Plug-in, Web Browser, Plug-in, Kirill Illenseer, Hostblock, Web Browsers, Internet

Software downloads 2008-04-03

Frame Relay Over MPLS (FRoMPLS): Today, Tomorrow and the Future

Today's telecom marketplace is perhaps more interesting than ever. The fast and wild days of unbridled optimism in the 1990's have passed, but the job of providing for growing data communication needs remains. It is at this critical moment in time that one find himself/herself increasingly considering the relationship of...

Tags: Frame Relay Forum, MPLS, Frame Relay, Network Technology, Networking

White papers 2002-09-04

Relay Timer Lite (zip)

Relay Timer Lite is a useful tool for NCD ProXR relay controller boards. It supports 1 board with 8 relays. Each relay can be programmed separately with multiple timers. Relay can be turned on/off manually from GUI easily. It can detect all existed COM ports automatically. As specialized software that...

Tags: Relay, Serial Port Tool, ActiveX/COM/COM+/DCOM, Corporate Governance, Middleware, Software Development, Software/Web Development, Business Operations, Corporate Law, Enterprise Software, Software

Software downloads 2008-04-03