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- Why you need to know Cisco IOS ACL port numbers
- When working with the Cisco IOS, it's very important to know your TCP and UDP port numbers. This is especially true when creating IOS access control lists ACLs. Let's take a closer look. What's a port number? Most of you likely know what port...
- Tags: Cisco IOS, Telnet, Router, IP, TCP, Cisco Systems Inc., Access Control, Internet Assigned Numbers Authority, Protocol Number, David Davis
- Blog posts 2007-08-31
- Control how data is delivered with ASP.NET
- While HTML is the most common format used on the Internet today, situations often arise when another format is necessary. A client may need XML, a graphic file, or even standard text. The problem is easily solved with a Web page's content-type. Learn more about manipulating the content type of...
- Tags: HTML, Microsoft ASP.NET, Middleware, Tony Patton, CSS, .NET, MIME-type, file extension, content type, .NET Newsletter, HTTP, Problem, Data, Listing B, MIME, Internet Assigned Numbers Authority, ContentType, Software Development, Software/Web Development, Enterprise Software, Software
- Technical articles 2006-01-17
- Control how data is delivered with ASP.NET
- During a recent Web project, I focused on the coding,while a Flash developer handled the user interface. The interface required datadelivered from a backend data source and the Flash developer requested textfiles. This was an unsuitable delivery method since the data varied accordingto the user. I convinced him to call...
- Tags: file extension, HTML, Microsoft ASP.NET, MIME, MIME-type, Tony Patton
- Technical articles 2006-01-17
- IPv6: Who's in charge?
- Have you ever wondered about the Internet addressing scheme? Where did it come from? Who's in charge? How is address duplication prevented? All valuable questions; especially since the answers will help us better understand IPv6. by Michael Kassner
- Tags: IPv6, ICANN, Internet Assigned Numbers Authority, Regional Internet Registries, Number Resource Organization, Internet, Networking, Michael Kassner
- Blog posts 2008-10-12
Additional Resources
- pptp and internet problem
- hi. I have an office with some branches. I want to make a connection between them. so I use a 2821 at main office as VPN server and use microsoft clientXP at remotes. the remotes can access my LAN thorough PPTP tunnel but the problemis that my users in my...
- Tags: VPNs, Firewalls, Network security, Internet, PPTP, firewall, Microsoft Corp., PPTP server
- Discussion threads 2008-04-07
- Getting autonomous with BGP: How Border Gateway Protocol can help you with routing
- BGP is an interautonomous system routing protocol that is heterogeneous and proven. Although routing can sometimes be a rather daunting task, Alexander Prohorenko is here to show you the light with BGP.... BGP is the primary routing protocol that Internet backbones use to exchange routing information...Michael DillonOkay, let's start from...
- Tags: Alexander Prohorenko, BGP-4, BGP
- Technical articles 2000-12-26
- IP address Outside the Range 169.254.89.61
- My laptop Wireless connectivity was working normal. Until yesterday it started to go up and down wildly. Today finally it gave out completely. I then discovered that the IP addresseven after released and renewed still outside the regular range. Now it's 169.254.89.61.I've tried turning the wireless card on and off,...
- Tags: laptop computer, DHCP, DHCP Server, wireless, Cesarmcp@..., windows, card, IP, router, server, IP address
- Q&A 2006-04-10
- Lock IT Down: Block TCP/IP ports to increase security
- Improve network security by blocking TCP/IP portsWhen setting up a firewall or proxy server, one of the most important tasks is to block undesirable incoming and outgoing ports and allow only the ones you need. Besides being time-consuming, this task can also be frustrating, because the basic information isn't readily...
- Tags: NETWORKING, Ed Bott, TCP/IP Port, IANA, TCP/IP, security
- Technical articles 2000-05-04
- Get IT Done: Secure your Windows 2000 server using TCP/IP filters
- Use TCP/CP filters to secure Windows 2000 server from internal hackingYour top priority as a network administrator is securing your servers from internal and external hackers. You may have one or more firewalls protecting your internal network from outside hackers, but what do you do about those internal hackers? You...
- Tags: NETWORKING, Network technology, Microsoft Windows 2000 Server, Get IT Done, server, Microsoft Windows, TCP/IP, network, TCP, UDP, acknowledgement, Microsoft Windows 2000
- Technical articles 2002-06-25
- Tech Tip: Reduce vulnerability by limiting your network's reach
- By Mike MullinsLarge blocks of networks have recently takenadvantage of zero-day exploits to steal financial data. Attackersmanipulated an exploit to transmit an individual's financialinformation to a country with a poor record of tracking andprosecuting Internet criminals. I won't mention the name of the country, butthese networks are...
- Tags: IP, IP address, network
- Technical articles 2004-08-20
- Reduce vulnerability by limiting your network's reach
- The Internet is global, but your network might not need to reach every corner of the globe. In this edition of Security Solutions, Mike Mullins explains why you should define the purpose of your network and whom it serves to reduce your network's exposure. In the past, black hats...
- Tags: Internet, NETWORKING, Michael Mullins CCNA, MCP, network, IP address, Security Solutions Newsletter, Security, Vulnerability, Mike Mullins, Michael \"Mullins CCNA, MCP\"
- Technical articles 2006-01-12
- Disable APIPA on Windows XP to speed up troubleshooting
- Alternate Configuration?When DHCP is enabled in TCPIP Properties, an "Alternate Configuration" tab becomes active allowing a fallback IP to be setup. Is the APIPA described here another alternate that is hidden or is this article referring this one? Anybody shed some light?No DHCPThis is the first time I've heard a...
- Tags: Alternate Configuration, APIPA, capt.brad, DHCP, Disable APIPA, hardware, IP, IP address, Microsoft Windows, Microsoft Windows XP, tcpip
- Discussion threads 2005-07-07
- Diagnose and eliminate packet storms
- Quickly solve PC problems with TechRepublic's Quick Reference: PC Troubleshooting Pak. The set of four durable laminated charts keeps proven solutions for troubleshooting PC hardware, networking, Windows desktop, and security issues at your fingertips.Imagine that one afternoon you start getting phone callsfrom users complaining of extremely slow network response time....
- Tags: network, network cable, Brien M. Posey MCSE, cable, PC
- Technical articles 2004-07-26
- Diagnose and eliminate packet storms
- Quickly solve PC problems with TechRepublic's Quick Reference: PC Troubleshooting Pak. The set of four durable laminated charts keeps proven solutions for troubleshooting PC hardware, networking, Windows desktop, and security issues at your fingertips. Imagine that one afternoon you start getting phone calls from users complaining of extremely slow network...
- Tags: cable, network, network cable, Brien M. Posey MCSE, RJ-45 connector, PC, RJ-45
- Technical articles 2004-10-19
- Geographically targeted advertising with GeoIP, PHP, and MySQL
- For Web site owners who rely on advertising revenue to keeptheir sites alive, every click is valuable. And since Web users have becomelargely immune to ads after the excessive pop-ups and in-your-face animationsof the past year, anything that attracts their attention automatically givesyour site an edge over the competition. What...
- Tags: Guest Contributor, GeoIP PHP, advertisement, MySQL
- Technical articles 2004-06-17
- Lock IT Down: Use network monitoring to guard your Apache server
- You can guard your Web server from misuse and malicious attack by tracking HTTP sessions, or by using SSL. You can also prepare for hackers with booby traps or software weapons. However, consider for a moment that your Apache server may not just be a Web server. There may be...
- Tags: Apache Software Foundation, server, Scott Robinson, Apache Web server, network, information technology, network monitoring
- Technical articles 2004-01-07
- Tech Tip: Lock down systems without breaking the bank
- By Mike Mullins Every piece of equipment on your network is apart of your security architecture, and the list ofsecurity-related devices and software that you can purchase hasincreased dramatically. Justifying what you need to buy to secureyour network is crucial to achieving defense in depth. If you're...
- Tags: bank, network, networked application, Nmap, security, Snort
- Technical articles 2004-07-28
- iDomains 2.4 (Mobile)
- iDomains allows to easily browse the Internet Top Level Domains. Viewing the information updated with those provided by the Internet Assigned Numbers Authority IANA.
- Tags: Mobile, iDomains, Internet
- Software downloads 2008-08-15
- Tech Tip: Lock down systems without breaking the bank
- By Mike MullinsEvery piece of equipment on your network is apart of your security architecture, and the list ofsecurity-related devices and software that you can purchase hasincreased dramatically. Justifying what you need to buy to secureyour network is crucial to achieving defense in depth. If you're in...
- Tags: network, networked application, Snort, bank, Nmap, security
- Technical articles 2004-04-09
- Tech Tip: How changes to Internet practices can affect you
- By Jonathan YardenIn September of 2003, there was a dramatic change madeto the Internet, and it's likely that you noticed. VeriSign instituted a number of changes to the .comand .net Top Level Domain zones, or root DNS servers, including thedeployment of a wildcard service that responds with a "valid" IPaddress...
- Tags: DNS, ICANN, Internet, VeriSign Inc.
- Technical articles 2003-12-08
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