How protocols know where to send the packet?
Basically clients use ARP/RARP. See <a href=”http://www.tcpipguide.com/free/t_TCPIPLowerLayerInterfaceInternetandTransportProtoc.htm”>this TCIP/IP guide section</a>. See <a href=”http://www.tcpipguide.com/free/t_AddressResolutionConceptsandIssues.htm”>this additional section</a>.
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| January 19, 2009 5:39 PM
Network protocols, OSI Model, Protocols and services
Basically clients use ARP/RARP. See <a href=”http://www.tcpipguide.com/free/t_TCPIPLowerLayerInterfaceInternetandTransportProtoc.htm”>this TCIP/IP guide section</a>. See <a href=”http://www.tcpipguide.com/free/t_AddressResolutionConceptsandIssues.htm”>this additional section</a>.
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| January 19, 2009 5:39 PM
Network protocols, OSI Model, Protocols and services
Reconfiguring network switches as 802.1q VLAN trunks for VMware ESX implementation
Yes it is fairly simple as long as your switches support it. 802.1Q is a most have with virtualization as it allows you to use multiple VLANs on a single physical switch port which reduces the number of physical NICs that you need in your hosts. Below are several documents that cover how to do [...]
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| January 19, 2009 4:40 PM
datacenter network cable management, Network equipment, Network switches, Networking, VLAN, VLAN management, VLAN trunking, VMware, VMware ESX
Yes it is fairly simple as long as your switches support it. 802.1Q is a most have with virtualization as it allows you to use multiple VLANs on a single physical switch port which reduces the number of physical NICs that you need in your hosts. Below are several documents that cover how to do [...]
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| January 19, 2009 4:40 PM
datacenter network cable management, Network equipment, Network switches, Networking, VLAN, VLAN management, VLAN trunking, VMware, VMware ESX
Merge two companies into one network
Dear, it’s easy dude ,, by using subnetting if you dont know how just tell me or you can email me “aliyouins@yahoo.com” OK best regards….
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| January 17, 2009 4:54 PM
Active Directory, DNS management, Domain configuration, Netwo, Network design, Server management, SQL, SQL Server 2000, SQL Server 2005, Windows 2000 Server, Windows Server 2003
Dear, it’s easy dude ,, by using subnetting if you dont know how just tell me or you can email me “aliyouins@yahoo.com” OK best regards….
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| January 17, 2009 4:54 PM
Active Directory, DNS management, Domain configuration, Netwo, Network design, Server management, SQL, SQL Server 2000, SQL Server 2005, Windows 2000 Server, Windows Server 2003
What will make an analog signal?
Digital
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| January 15, 2009 9:24 PM
Analog, Cabling, CAT 5, Network cabling, Network hardware, Network Interface Cards, Networking, Networking Equipment, signals, Telecom, Telecommunications
Digital
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| January 15, 2009 9:24 PM
Analog, Cabling, CAT 5, Network cabling, Network hardware, Network Interface Cards, Networking, Networking Equipment, signals, Telecom, Telecommunications
The entire network Slows Down when anyone does a download from the internet
ATT should be able to tell you if the capacity is being used. I used to have their managed network services and one of the features was usage reports that showed how much capacity was being used on a particular link. Place a network tap between the router and the LAN. See my <a href=”http://itknowledgeexchange.techtarget.com/it-trenches”>blog [...]
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| January 15, 2009 9:21 PM
Network Bottleneck, Network connectivity, Network slowdown, slow network, T-1, Windows Server 2003
ATT should be able to tell you if the capacity is being used. I used to have their managed network services and one of the features was usage reports that showed how much capacity was being used on a particular link. Place a network tap between the router and the LAN. See my <a href=”http://itknowledgeexchange.techtarget.com/it-trenches”>blog [...]
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| January 15, 2009 9:21 PM
Network Bottleneck, Network connectivity, Network slowdown, slow network, T-1, Windows Server 2003
What certifications would help me switch from network engineering to administrator?
Boy! Do I have an interesting answer for you. I recently put together a survey of networking certifications for another TechTarget.com Website, SearchNetworking.com. It’s called the <a href=”http://searchnetworking.techtarget.com/generic/0,295582,sid7_gci1324551,00.html”>Networking Certfication Guide</a> and will surely tell you more than you wanted to know. Given your current background and interests, I’d suggest the relevant Microsoft certifications listed there [...]
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| January 15, 2009 7:16 PM
career advice, Career development, IT careers, IT certification and training, IT jobs, Network Administrator, Network engineering, Networking, Networking certifications, Staffing, Windows Server 2003
Boy! Do I have an interesting answer for you. I recently put together a survey of networking certifications for another TechTarget.com Website, SearchNetworking.com. It’s called the <a href=”http://searchnetworking.techtarget.com/generic/0,295582,sid7_gci1324551,00.html”>Networking Certfication Guide</a> and will surely tell you more than you wanted to know. Given your current background and interests, I’d suggest the relevant Microsoft certifications listed there [...]
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| January 15, 2009 7:16 PM
career advice, Career development, IT careers, IT certification and training, IT jobs, Network Administrator, Network engineering, Networking, Networking certifications, Staffing, Windows Server 2003
Is this network certification path good for an aspiring ethical hacker?
Dear B: I’m a little puzzled: by definition, an ethical hacker generally works with software from a development/hacking perspective as well as from a user/admin/superuser perspective. I don’t see anything in your list that hits any software development buttons. Otherwise, it looks OK, except that MCSA and MCSE are on their way out. You should [...]
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| January 15, 2009 6:34 PM
Career development, CCENT, CCNA, Certification and specializations, CompTIA certifications, CompTIA Network+, CompTIA Security+, degrees, Ethical hackers, IT careers, IT jobs, MCSA, MCSE, Networking, Networking careers, Networking certifications, Students
Dear B: I’m a little puzzled: by definition, an ethical hacker generally works with software from a development/hacking perspective as well as from a user/admin/superuser perspective. I don’t see anything in your list that hits any software development buttons. Otherwise, it looks OK, except that MCSA and MCSE are on their way out. You should [...]
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| January 15, 2009 6:34 PM
Career development, CCENT, CCNA, Certification and specializations, CompTIA certifications, CompTIA Network+, CompTIA Security+, degrees, Ethical hackers, IT careers, IT jobs, MCSA, MCSE, Networking, Networking careers, Networking certifications, Students
Which network security certifications would you recommend and why?
The certifications you mention are certainly good ones to have. They are vendor specific and you gain valuable knowledge in how to configure that vendor’s products to solve issues. Non-vendor specific certifications are valuable in that they teach you concepts and how to think of the bigger-picture. Such certifications include the Comptia, SANS, or EC [...]
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| January 15, 2009 6:02 PM
CCNA, Cisco certifications, degrees, IT training and certifications, MCSE, MCSE CCNA, Network security, Networking, Networking certifications
The certifications you mention are certainly good ones to have. They are vendor specific and you gain valuable knowledge in how to configure that vendor’s products to solve issues. Non-vendor specific certifications are valuable in that they teach you concepts and how to think of the bigger-picture. Such certifications include the Comptia, SANS, or EC [...]
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| January 15, 2009 6:02 PM
CCNA, Cisco certifications, degrees, IT training and certifications, MCSE, MCSE CCNA, Network security, Networking, Networking certifications
Exchange Server 2007 CCR moving users
There are mailbox migration tools by software providers such as Quest which you can use, but they cost money, so it really depends on how many users you have and how much time you have to do it in. My organaztion moved from exchange 2003 to Exchange 2007 in the space of about 6 months [...]
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| January 15, 2009 3:22 PM
CCR, Exchange 2007, Exchange 2007 CCR, Exchange Cluster, Exchange mailbox management, ISA Server, NLB cluster
There are mailbox migration tools by software providers such as Quest which you can use, but they cost money, so it really depends on how many users you have and how much time you have to do it in. My organaztion moved from exchange 2003 to Exchange 2007 in the space of about 6 months [...]
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| January 15, 2009 3:22 PM
CCR, Exchange 2007, Exchange 2007 CCR, Exchange Cluster, Exchange mailbox management, ISA Server, NLB cluster
Do I need Active Directory?
No – AD is not necessary. You can create local user accounts. Although, if the users have accounts in AD why would you want to manage separate credentials for this term server? *********** It sounds like you are asking if you specifically need to use the AD tools on this terminal server. No you do [...]
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| January 15, 2009 3:15 PM
Active Directory, Microsoft Office 2003, Network security, Security, Terminal Server, Windows Server 2003
No – AD is not necessary. You can create local user accounts. Although, if the users have accounts in AD why would you want to manage separate credentials for this term server? *********** It sounds like you are asking if you specifically need to use the AD tools on this terminal server. No you do [...]
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| January 15, 2009 3:15 PM
Active Directory, Microsoft Office 2003, Network security, Security, Terminal Server, Windows Server 2003
Can I create one Domain Controller for 1000 Users
It is recommended to have at least two domain controllers for fault tolerance with every active directory deployment. Just having one domain controller is not a good idea. DC’s don’t need to be very beefy, so you can get by with basic server configurations. For 1000 users, I would recommend 2 to 4 domain controllers [...]
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| January 14, 2009 6:44 PM
Branch Office networks, Domain Controller, Network administration, Windows Server
It is recommended to have at least two domain controllers for fault tolerance with every active directory deployment. Just having one domain controller is not a good idea. DC’s don’t need to be very beefy, so you can get by with basic server configurations. For 1000 users, I would recommend 2 to 4 domain controllers [...]
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| January 14, 2009 6:44 PM
Branch Office networks, Domain Controller, Network administration, Windows Server
Configuring Netgear WGT624 Router with Acer Aspire Netbook
Tha manual for your Netgear router is located <a href=”http://www.ebookspdf.com/computers/4300/netgear-wgt624-user-manual/”>here</a>. The support page from Netgear is <a href=”http://kbserver.netgear.com/products/WGT624.asp”>here</a>. I would disable all security on your router and computer, then attempt to make a connection. After making the connection. Enable security (I suggest WPA) Leave SSID set as broadcast, not broadcasting can cause window’s wireless network [...]
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| January 14, 2009 5:18 PM
Firewalls, Netgear WGT624, Router configuration, Routers, Wireless networking, Wireless router configuration, Wireless routers
Tha manual for your Netgear router is located <a href=”http://www.ebookspdf.com/computers/4300/netgear-wgt624-user-manual/”>here</a>. The support page from Netgear is <a href=”http://kbserver.netgear.com/products/WGT624.asp”>here</a>. I would disable all security on your router and computer, then attempt to make a connection. After making the connection. Enable security (I suggest WPA) Leave SSID set as broadcast, not broadcasting can cause window’s wireless network [...]
View Answer
| January 14, 2009 5:18 PM
Firewalls, Netgear WGT624, Router configuration, Routers, Wireless networking, Wireless router configuration, Wireless routers
I want to create a stub zone of some xxx.com (domain) in yyy.com (domain)
Credit for this article should be properly acknowledged. Here is the author and original link: http://www.windowsnetworking.com/articles_tutorials/DNS_Stub_Zones.html Stub zones are a new feature of DNS in Windows Server 2003 that can be used to streamline name resolution, especially in a split namespace scenario. They also help reduce the amount of DNS traffic on your network, making [...]
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| January 13, 2009 10:12 PM
DNS, DNS Stub Zones, Domain management, Stub Zones
Credit for this article should be properly acknowledged. Here is the author and original link: http://www.windowsnetworking.com/articles_tutorials/DNS_Stub_Zones.html Stub zones are a new feature of DNS in Windows Server 2003 that can be used to streamline name resolution, especially in a split namespace scenario. They also help reduce the amount of DNS traffic on your network, making [...]
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| January 13, 2009 10:12 PM
DNS, DNS Stub Zones, Domain management, Stub Zones
Cisco Router 2800 series step by step configuration using DSL
The <a href=”http://www.cisco.com/en/US/products/ps5854/prod_configuration_examples_list.html”>cisco site</a> has some good guides that should help you
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| January 13, 2009 5:49 PM
Cisco 2800, Cisco 2800 configuration, Cisco Routers, DSL, Routers
The <a href=”http://www.cisco.com/en/US/products/ps5854/prod_configuration_examples_list.html”>cisco site</a> has some good guides that should help you
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| January 13, 2009 5:49 PM
Cisco 2800, Cisco 2800 configuration, Cisco Routers, DSL, Routers
WAN design and implementation
Well a LAN is a wired network (an ethernet cable runs to each device on the network; generally pretty reliable). WAN is a wireless network (each device on the network has a wireless card and gets the internet that way). If your 7 sites are physically in different locations (as in not the same building) [...]
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| January 13, 2009 5:36 PM
ATM, Branch Office networks, Frame Relay, LAN, Network design, Remote access, VPN, WAN
Well a LAN is a wired network (an ethernet cable runs to each device on the network; generally pretty reliable). WAN is a wireless network (each device on the network has a wireless card and gets the internet that way). If your 7 sites are physically in different locations (as in not the same building) [...]
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| January 13, 2009 5:36 PM
ATM, Branch Office networks, Frame Relay, LAN, Network design, Remote access, VPN, WAN
Full description of all the TCP/IP servers
<a href=”http://www.yale.edu/pclt/COMM/TCPIP.HTM”>Try this information</a> or another google search should help. What problems are you having? Thanks Jimmy, that link is a useful insight into IP for a beginner such as me. The problem we had was related to not being able to map a network drive to our IFS. The problem for me was when [...]
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| January 13, 2009 3:23 PM
IP servers, TCP, TCP/IP
<a href=”http://www.yale.edu/pclt/COMM/TCPIP.HTM”>Try this information</a> or another google search should help. What problems are you having? Thanks Jimmy, that link is a useful insight into IP for a beginner such as me. The problem we had was related to not being able to map a network drive to our IFS. The problem for me was when [...]
View Answer
| January 13, 2009 3:23 PM
IP servers, TCP, TCP/IP
Problems after installing fresh copy of Windows XP
Have you checked your internet connection?
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| January 13, 2009 3:03 PM
Internet connectivity, Limited or no connectivity, Network connectivity, No network provider, OS installation/upgrades, slow sound, Sound, Windows XP, Windows XP installation
Have you checked your internet connection?
View Answer
| January 13, 2009 3:03 PM
Internet connectivity, Limited or no connectivity, Network connectivity, No network provider, OS installation/upgrades, slow sound, Sound, Windows XP, Windows XP installation
Blocking Internet access on Terminal Servers using using GPO’s
This is what you followed: Have you ever want to block a user’s ability to surf the Web using Internet Explorer? Here’s how you can do that! Use a Group Policy Object (GPO) that forces Internet Explorer to use a proxy server with an address of 0.0.0.0 for port 80 requests. Then create another policy [...]
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| January 13, 2009 1:49 PM
Active Directory, Block Internet Access, GPO, Internet restrictions, Proxy, Terminal Services, User Permissions
This is what you followed: Have you ever want to block a user’s ability to surf the Web using Internet Explorer? Here’s how you can do that! Use a Group Policy Object (GPO) that forces Internet Explorer to use a proxy server with an address of 0.0.0.0 for port 80 requests. Then create another policy [...]
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| January 13, 2009 1:49 PM
Active Directory, Block Internet Access, GPO, Internet restrictions, Proxy, Terminal Services, User Permissions
Cisco VPN version 6.0 error message 427
Are you sitting idle for a long time? It could also be an issue with a IP address allocation. ***************************** Reason code 427: “Peer disconnected tunnel. Check the peer logs for details” check your VPN endpoint logs to see why it disconnected the client here is <a href=”http://www.cisco.com/en/US/products/sw/secursw/ps2308/products_tech_note09186a00801f253d.shtml”>Link</a> to Cisco VPN Client GUI Error Lookup [...]
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| January 12, 2009 10:03 PM
Cisco VPN, Cisco VPN 6, Cisco VPN Error Message 427, Cisco VPN Error Messages
Are you sitting idle for a long time? It could also be an issue with a IP address allocation. ***************************** Reason code 427: “Peer disconnected tunnel. Check the peer logs for details” check your VPN endpoint logs to see why it disconnected the client here is <a href=”http://www.cisco.com/en/US/products/sw/secursw/ps2308/products_tech_note09186a00801f253d.shtml”>Link</a> to Cisco VPN Client GUI Error Lookup [...]
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| January 12, 2009 10:03 PM
Cisco VPN, Cisco VPN 6, Cisco VPN Error Message 427, Cisco VPN Error Messages
Can I use a Linksys BEFSR41 as a hub connected to a Linksys WRT150N?
Yes you should be able to do this. Just make sure to disable the DHCP Server. Do not use the WAN port (Internet connection) for cross connecting between the old router and your new router. Use just the four (4) switch ports. Depending on the system you may need a crossover cable or adapter to [...]
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| January 12, 2009 5:41 PM
Hubs, Linksys BEFSR41, Linksys Routers, Linksys WRT150N, Routers, Wireless routers
Yes you should be able to do this. Just make sure to disable the DHCP Server. Do not use the WAN port (Internet connection) for cross connecting between the old router and your new router. Use just the four (4) switch ports. Depending on the system you may need a crossover cable or adapter to [...]
View Answer
| January 12, 2009 5:41 PM
Hubs, Linksys BEFSR41, Linksys Routers, Linksys WRT150N, Routers, Wireless routers
