Sometimes it is the simplest things that get you. I was asked to troubleshoot a system that would not register into DNS after a domain migration. The system could ping its new gateway and the new DNS servers–telnet showed access to the new DNS boxes on port 53 and name resolution was functioning correctly other
One of the quickest and easiest ways to set network configuration on a network adapter is via command line. Lets use the following criteria: We will be setting up Local Are Connection IP: 192.168.200.2 MASK: 255.255.255.0 GW: 192.168.200.1 GW Metric: 1 Here is the syntax for IPv4: netsh interface ipv4 show config netsh interface ip set address name=”Local
I was asked to troubleshoot a recently built DNS server that was having some difficulties. One of the errors had me scratching my head for a few minutes. When doing an nslookup the following would be displayed C:\nslookup Default Server: UnKnown Address: 192.168.1.4 As it turns out it’s not really an error –what it is describing is
While this is extremely rare you may encounter a web application that loves to open TCP connections to the point where the default pool of available TCP connections are exhausted. [HKEY_LOCAL_MACHINE \System \CurrentControlSet \Services \Tcpip \Parameters] MaxUserPort = 5000 (Max = 65534) Just increase the value from the default 5000. Note: You should investigate if
So you rebooted your Windows server and NFS did not automatically re-mount itself? To make the NFS share presistent we have to use our old friend net use. net use /persistent:yes now execute the mount command and windows will keep it as a persistent coneccetion even after re-boot. mount -u: -p: :/
Ping returns the following Pinging DC1.domain.com [::1] from ::1 with 32 bytes of data: Reply from ::1: time=1ms Reply from ::1: time=2ms Reply from ::1: time=1ms Reply from ::1: time=3ms Disable IPv6 and your problems go away. It’s usually not enough to uncheck it in the NIC properties. For best results use the registry to
RPC by default can grab any dynamic port above 1024. Security sometimes may ask you to limit that to a much narrower range. A the minimum you should have about 100-200 ports available for RPC communication. Here is the registry setting: HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc Ports: REG_MULTI_SZ: 5000-5100 PortsInternetAvailable: REG_SZ: Y UseInternetPorts: REG_SZ: Y Full MS KB
The IP address you have entered for this network adapter is already assigned to another adapter… From time to time you may encounter this error on a newly P2V system. In the past it was a registry fix but now Microsoft has a prefered GUI solution: Click Start, click Run, type cmd.exe Type set devmgr_show_nonpresent_devices=1
One of the easiest ways to see what ports a windows system is listening on is to use netstat. To get a comprehensive list open a command prompt netstat -an Active Connections Proto Local Address Foreign Address State TCP 0.0.0.0:135 0.0.0.0:0 LISTENING TCP 0.0.0.0:445 0.0.0.0:0 LISTENING TCP 0.0.0.0:1494 0.0.0.0:0 LISTENING TCP 0.0.0.0:2598 0.0.0.0:0 LISTENING TCP
Do you want to disable IPv6 on all interfaces but find that doing so on the NIC properties in the GUI does not always work properly? The best way to truly disable it is via registry setting: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters] “DisabledComponents”=dword:000000ff This will disable it on all interfaces and force IPv4 preference…