Weird sharing problem in LAN after upgrading switch
According to Microsoft, XP Pro Workgroups become impractical in environments with more than 10 computers. You need to upgrade to a domain. ============ Apply Microsoft updates. It is possible that there is malicious software running on your network creating these problems. As the previous poster suggests, peer-to-peer XP workgroups for this large of an environment [...]
View Answer
| February 4, 2009 4:33 PM
LAN, Linux servers, Managed Switches, Network administration, Network upgrades and patches, Switch configuration, Windows Server 2003, Windows XP
According to Microsoft, XP Pro Workgroups become impractical in environments with more than 10 computers. You need to upgrade to a domain. ============ Apply Microsoft updates. It is possible that there is malicious software running on your network creating these problems. As the previous poster suggests, peer-to-peer XP workgroups for this large of an environment [...]
View Answer
| February 4, 2009 4:33 PM
LAN, Linux servers, Managed Switches, Network administration, Network upgrades and patches, Switch configuration, Windows Server 2003, Windows XP
Exchange Capabilities
Depending on your version of Exchange, you can utilize Outlook Web Access. We’re using Exchange 2003 and for users external of the domain, they log into email witn OWA. It works fairly well. Everything has it’s limitations, but you don’t need a VPN just to get your email. If I remember right, Exchange 5.5 and [...]
View Answer
| February 2, 2009 7:09 PM
Exchange Server Configuration, POP3, VPN
Depending on your version of Exchange, you can utilize Outlook Web Access. We’re using Exchange 2003 and for users external of the domain, they log into email witn OWA. It works fairly well. Everything has it’s limitations, but you don’t need a VPN just to get your email. If I remember right, Exchange 5.5 and [...]
View Answer
| February 2, 2009 7:09 PM
Exchange Server Configuration, POP3, VPN
Port Forwarding with Cisco 3560
You can do this by applying PBR (Policy Based Routing). See below a very simple config. You can amend the PBR rules in below ACL <b>1. Define your PBR rule ACL </b> <pre><pre>ip access-list extended PBR permit ip any any eq 80 permit ip any any eq 445</pre> <b>2. Define next hop</b> <pre>route-map PBR permit [...]
View Answer
| February 2, 2009 6:39 PM
Cisco, Cisco 3560, L3 Switches, Layer 3, Layer 3 switches, Network administration, Port 445, Port 80, Port forwarding, SMB over IP, Switch configuration, Switches
You can do this by applying PBR (Policy Based Routing). See below a very simple config. You can amend the PBR rules in below ACL <b>1. Define your PBR rule ACL </b> <pre><pre>ip access-list extended PBR permit ip any any eq 80 permit ip any any eq 445</pre> <b>2. Define next hop</b> <pre>route-map PBR permit [...]
View Answer
| February 2, 2009 6:39 PM
Cisco, Cisco 3560, L3 Switches, Layer 3, Layer 3 switches, Network administration, Port 445, Port 80, Port forwarding, SMB over IP, Switch configuration, Switches
getting started in security
A good understanding of network fundamentals will help you. The Cisco certifications are vendor specific but will teach you a lot of foundational knowledge. The CompTia Network+ is not vendor specific and will help you also. A good mix of both vendor-specific and general education will be the best plan. CompTia’s Security+ is a good [...]
View Answer
| February 2, 2009 4:54 PM
CCNA, CCSP, Certifications, IT careers, Security careers
A good understanding of network fundamentals will help you. The Cisco certifications are vendor specific but will teach you a lot of foundational knowledge. The CompTia Network+ is not vendor specific and will help you also. A good mix of both vendor-specific and general education will be the best plan. CompTia’s Security+ is a good [...]
View Answer
| February 2, 2009 4:54 PM
CCNA, CCSP, Certifications, IT careers, Security careers
Monitoring Exchange 2007 Administrators
You will need a third-party tool for this. Maybe someone is already using one successfully who coud recommend it. I have reviewed the one from <a href=”http://www.quest.com/InTrust-Plug-in-for-Exchange/”>Quest software</a> but we ou compnay is not allocating any spending for this sort of thing so I have not used it. Looks good though.
View Answer
| February 2, 2009 3:44 PM
Exchange 2007, Exchange 2007 administration, Monitoring employees, Outsourcing
You will need a third-party tool for this. Maybe someone is already using one successfully who coud recommend it. I have reviewed the one from <a href=”http://www.quest.com/InTrust-Plug-in-for-Exchange/”>Quest software</a> but we ou compnay is not allocating any spending for this sort of thing so I have not used it. Looks good though.
View Answer
| February 2, 2009 3:44 PM
Exchange 2007, Exchange 2007 administration, Monitoring employees, Outsourcing
Is it possible to lift router-based bandwidth caps (if they exist)?
If your ISP has put a bandwidth limit on your account it would need to be removed by them. Nothing you are able to do on our side will increase the speed if they are limiting you. =============== Check the speed and duplex settings if possible on your network card and on the router LAN [...]
View Answer
| February 2, 2009 3:41 PM
Bandwidth limits, Bandwidth management, Router caps, Router configuration, Routers
If your ISP has put a bandwidth limit on your account it would need to be removed by them. Nothing you are able to do on our side will increase the speed if they are limiting you. =============== Check the speed and duplex settings if possible on your network card and on the router LAN [...]
View Answer
| February 2, 2009 3:41 PM
Bandwidth limits, Bandwidth management, Router caps, Router configuration, Routers
Duplicate IP addresses?
Computer should not be sharing an IP Address. Each machine will need its own IP address so that the computers now how to talk to each other. If one computer is on, and your router reboots then another computer is turned on then both machines could be issued the sameIP address. Because of this it [...]
View Answer
| February 2, 2009 3:35 PM
Duplicate IP addresses, IP address, privacy
Computer should not be sharing an IP Address. Each machine will need its own IP address so that the computers now how to talk to each other. If one computer is on, and your router reboots then another computer is turned on then both machines could be issued the sameIP address. Because of this it [...]
View Answer
| February 2, 2009 3:35 PM
Duplicate IP addresses, IP address, privacy
8 port fast ethernet switch
Yes, you can. ================ If it is a switch, then you won’t be able to use it as a hub by definition – a hub is half-duplex and a switch is full duplex and only transmits either broadcasts on all ports or unicast directed to the device(s) connected to the switch port. -LabNuke99
View Answer
| February 2, 2009 3:20 PM
8 port fast Ethernet Switch, LAN Design, LAN switching, Network hub
Yes, you can. ================ If it is a switch, then you won’t be able to use it as a hub by definition – a hub is half-duplex and a switch is full duplex and only transmits either broadcasts on all ports or unicast directed to the device(s) connected to the switch port. -LabNuke99
View Answer
| February 2, 2009 3:20 PM
8 port fast Ethernet Switch, LAN Design, LAN switching, Network hub
iSCSI SAN how many IP Addresses are needed?
I would say 1 for each LUN you have would make sense. My recommendation would be a minimum of one IP address for each controller in the SAN for a total of 4. If you had a fairly redundant network and could take advantage of MPIO then I would recommend two IP addresses per controller [...]
View Answer
| February 2, 2009 2:18 PM
IP address, iSCSI, iSCSI Ports, iSCSI SAN Server, Storage controllers
I would say 1 for each LUN you have would make sense. My recommendation would be a minimum of one IP address for each controller in the SAN for a total of 4. If you had a fairly redundant network and could take advantage of MPIO then I would recommend two IP addresses per controller [...]
View Answer
| February 2, 2009 2:18 PM
IP address, iSCSI, iSCSI Ports, iSCSI SAN Server, Storage controllers
Windows 7. What are peoples initial thoughts
Windows 7 beta seems to work fine. It’s faster than Vista, and they continued to improve the visual effects. One issue I found with all new operating systems is Server Admin pack compatibility. SP1 got it working in Vista, but they still have problems in the beta version.
View Answer
| January 30, 2009 10:45 PM
Data Center, Exchange, Networking, Virtualization, Windows 7
Windows 7 beta seems to work fine. It’s faster than Vista, and they continued to improve the visual effects. One issue I found with all new operating systems is Server Admin pack compatibility. SP1 got it working in Vista, but they still have problems in the beta version.
View Answer
| January 30, 2009 10:45 PM
Data Center, Exchange, Networking, Virtualization, Windows 7
What are the most overused tech buzzwords for 2008?
My list of overused IT buzzwords/acronyms: - Smart Phone - Mobile Broadband - Virtualisation - REST - AJAX Nandu:-) _________________________________________________________________ Might I ADD: Value – Add! …and Is there a better way to say Solutions? Please, no more Cloud Computing? GREEN anything … Bailouts and Financial Crisis… Bush Bashing ! Bob VL _______________________________________ Not really [...]
View Answer
| January 30, 2009 10:39 PM
AS/400, Buzzwords, CIO, CRM, Database, DataCenter, DataManagement, Development, Exchange, Linux, Lotus Domino, Microsoft Windows, Mobile, Networking, Oracle, SAP, Security, SQL Server, Storage, Technology, Virtualization, VoIP
My list of overused IT buzzwords/acronyms: - Smart Phone - Mobile Broadband - Virtualisation - REST - AJAX Nandu:-) _________________________________________________________________ Might I ADD: Value – Add! …and Is there a better way to say Solutions? Please, no more Cloud Computing? GREEN anything … Bailouts and Financial Crisis… Bush Bashing ! Bob VL _______________________________________ Not really [...]
View Answer
| January 30, 2009 10:39 PM
AS/400, Buzzwords, CIO, CRM, Database, DataCenter, DataManagement, Development, Exchange, Linux, Lotus Domino, Microsoft Windows, Mobile, Networking, Oracle, SAP, Security, SQL Server, Storage, Technology, Virtualization, VoIP
print to HP OfficeJet 7780
we had somewhat of a similiar problem with our brand new HP printer. I contacted IBM who suggested following: set FORM FEED to *AUTOCUT set HOST PRINT TRANSFORM to *YES set MFG TYPE/MODEL to RICOHAP900 (yes, Ricoh model) set USER DEFINED OBJECT to *NONE blank out LIBRARY keep SYSTEM DRIVER PROGRAM to *HPPJLDRV works like [...]
View Answer
| January 30, 2009 9:54 PM
AS/400 network printers, AS/400 printing, HP OfficeJet 7780, HP520, Network printing, V6R1
we had somewhat of a similiar problem with our brand new HP printer. I contacted IBM who suggested following: set FORM FEED to *AUTOCUT set HOST PRINT TRANSFORM to *YES set MFG TYPE/MODEL to RICOHAP900 (yes, Ricoh model) set USER DEFINED OBJECT to *NONE blank out LIBRARY keep SYSTEM DRIVER PROGRAM to *HPPJLDRV works like [...]
View Answer
| January 30, 2009 9:54 PM
AS/400 network printers, AS/400 printing, HP OfficeJet 7780, HP520, Network printing, V6R1
Vista laptop won’t recognize Window 2000 Server network
Question?? “I have Internet access” Do you mean by this that you have access to the Internet through your network/router, or if you hook the vista laptop to an Internet connection you have Internet access? My first thought here is to make sure that within TCP/IP settings of your network card, you have IPv6 disabled.
View Answer
| January 30, 2009 5:26 AM
Mapped drives, Network drives, Vista compatibility, Windows 2000 Server, Windows Vista, Windows XP
Question?? “I have Internet access” Do you mean by this that you have access to the Internet through your network/router, or if you hook the vista laptop to an Internet connection you have Internet access? My first thought here is to make sure that within TCP/IP settings of your network card, you have IPv6 disabled.
View Answer
| January 30, 2009 5:26 AM
Mapped drives, Network drives, Vista compatibility, Windows 2000 Server, Windows Vista, Windows XP
Connecting 2, 3 or 4 sites over MPLS
All of the configurations depend on what you decide with your Service Provider. Usually they will setup a RJ45 connection at your locations. Unmanaged MPLS connections require you to purchase, configure, and maintain your own routers. EIGRP may not be possible unless the ISP provides that option; the ISPs configure their own routing using BGP. [...]
View Answer
| January 30, 2009 12:25 AM
EIGRP, Enhanced Interior Gateway Routing Protocol, MPLS, Multiprotocol Label Switching, Network design, Network protocols, Routing and switching, WAN, WAN design
All of the configurations depend on what you decide with your Service Provider. Usually they will setup a RJ45 connection at your locations. Unmanaged MPLS connections require you to purchase, configure, and maintain your own routers. EIGRP may not be possible unless the ISP provides that option; the ISPs configure their own routing using BGP. [...]
View Answer
| January 30, 2009 12:25 AM
EIGRP, Enhanced Interior Gateway Routing Protocol, MPLS, Multiprotocol Label Switching, Network design, Network protocols, Routing and switching, WAN, WAN design
Upgrade existing network for wired and wireless Internet access
If your network truly uses the 173.201.x.x/ 16 subnet, then your situation is going to be complicated by the fact that the address space on this LAN is the same as an existing address space on the internet. You should use one of the private address spaces as outlined in <a href=”http://tools.ietf.org/html/rfc1918″>RFC 1918</a> (see section [...]
View Answer
| January 29, 2009 1:22 PM
Internet access, IP address, Linksys WRT54GS, Subnet mask, Subnets, Wireless networking
If your network truly uses the 173.201.x.x/ 16 subnet, then your situation is going to be complicated by the fact that the address space on this LAN is the same as an existing address space on the internet. You should use one of the private address spaces as outlined in <a href=”http://tools.ietf.org/html/rfc1918″>RFC 1918</a> (see section [...]
View Answer
| January 29, 2009 1:22 PM
Internet access, IP address, Linksys WRT54GS, Subnet mask, Subnets, Wireless networking
VPN behind PIX firewall
For IPSEC VPNs, you need to be sure to have UDP/TCP port 500 (isakmp) opened. The firewall will also need to permit protocol 50 (ESP) traffic. You will also need to create a mapped IP through the firewall. IPSEC does not play well with some network address translation (NAT) implementations.
View Answer
| January 29, 2009 1:13 PM
Cisco, Cisco PIX 525, Cisco VPN, Cisco VPN Error Messages, Firewalls, PIX 525 firewall, VPN, VPN connectivity
For IPSEC VPNs, you need to be sure to have UDP/TCP port 500 (isakmp) opened. The firewall will also need to permit protocol 50 (ESP) traffic. You will also need to create a mapped IP through the firewall. IPSEC does not play well with some network address translation (NAT) implementations.
View Answer
| January 29, 2009 1:13 PM
Cisco, Cisco PIX 525, Cisco VPN, Cisco VPN Error Messages, Firewalls, PIX 525 firewall, VPN, VPN connectivity
Network
Look at the NIC’s on the troubled computers. See if there are any errors shown on the interfaces. Also check the switch ports on the servers and clients for duplex settings. Set all servers & switch ports servicing them to the maximum possible speed and match duplex settings. This will help first of all with [...]
View Answer
| January 28, 2009 5:28 PM
Network monitoring, Network performance, Network performance monitoring, Network testing
Look at the NIC’s on the troubled computers. See if there are any errors shown on the interfaces. Also check the switch ports on the servers and clients for duplex settings. Set all servers & switch ports servicing them to the maximum possible speed and match duplex settings. This will help first of all with [...]
View Answer
| January 28, 2009 5:28 PM
Network monitoring, Network performance, Network performance monitoring, Network testing
How many switches can you have in a network?
I don’t think there is any limitation in the number of switches you can put in a network; however, you need to consider complexity, added delays, connectivity, and port density when you calculate the number of switches you want in your network. The more switches you have, the more chances there are to break down [...]
View Answer
| January 27, 2009 11:45 PM
Calculations, Network design, Networking, Networks, Routing and switching, Switches
I don’t think there is any limitation in the number of switches you can put in a network; however, you need to consider complexity, added delays, connectivity, and port density when you calculate the number of switches you want in your network. The more switches you have, the more chances there are to break down [...]
View Answer
| January 27, 2009 11:45 PM
Calculations, Network design, Networking, Networks, Routing and switching, Switches
Using VPN with Windows Vista
We have a couple of users doing that with Vista without any problem, but I think you should perform your own tests with a Vista machine before making your decision. ——————————— Depends on the VPN. If you use a software VPN, you need to make sure it is Vista compatible. If you use a VPN [...]
View Answer
| January 27, 2009 11:35 PM
Remote access, Remote connectivity, Vista, Vista compatibility, VPN, Windows Vista, Windows XP
We have a couple of users doing that with Vista without any problem, but I think you should perform your own tests with a Vista machine before making your decision. ——————————— Depends on the VPN. If you use a software VPN, you need to make sure it is Vista compatible. If you use a VPN [...]
View Answer
| January 27, 2009 11:35 PM
Remote access, Remote connectivity, Vista, Vista compatibility, VPN, Windows Vista, Windows XP
Server sizing tools and approaches
If you don’t know what applications you are going to buy, then how can you be expected to correctly size the servers. No tool is going to be able to provide you with these numbers any better than another. At that point you are dealing with a whole lot of guesswork. You could go to [...]
View Answer
| January 27, 2009 9:14 PM
Capacity planning, Data center planning, Network design, Server administration, Server management, Server sizing, Server Sizing tools
If you don’t know what applications you are going to buy, then how can you be expected to correctly size the servers. No tool is going to be able to provide you with these numbers any better than another. At that point you are dealing with a whole lot of guesswork. You could go to [...]
View Answer
| January 27, 2009 9:14 PM
Capacity planning, Data center planning, Network design, Server administration, Server management, Server sizing, Server Sizing tools
