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Tunnel adapters on ipconfig?

Hello I recently noticed unusual information in my IPCONFIG. Usually I only see Ethernet adapter Local Area Connection, but now I see Tunnel adapter isatap... and Tunnel adapter Teredo... I was wondering if this is something I should be worried about, if yes how do I remove them?

What angle is optimal for the antennas on my wireless network card?

I'm sharing a house with some friends and I'm in the bedroom right up in the attic. The router is right down on the ground floor and I get connectivity issues.

I've found that if I adjust the two antennas on my network card I can sometimes get a much better signal.

Is there an optimum angle to get the best connection or is it academic? Should they be pointing towards the router? Should they be spread into a V shape or stick out parallel to each other?

What does the "Fi" in "Wi-Fi" mean?

I just got into a heated discussion about Wi-Fi. What does the Fi in Wi-Fi mean? I would have thought potentially "frequency interface" since all network adapters are classified as interfaces. However I'm not certain.

Are MAC addresses unique when coming out of the factory?

According to Wikipedia:

A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment

But how unique are MAC addresses on devices coming out of the factory? I seem to remember hearing a long time ago about how some manufacturers would reuse MAC addresses on their network cards. Does anyone have any hard facts one way or the other?

Check Box -> Show icon in taskbar notification area when connected is missing in windows 7

Please see the picture below , this is on my network adapters properties :

where is the General Tab In this Network adapter ?

Also, I couldn't find that check box for Display Network Icon on the Taskbar? Where can I find it?

Is something wrong with my new installation of windows 7?

The link below is for windows xp, but I couldn't find anything for windows 7!

How Display Network Icon on the Taskbar in windows xp

What is the difference between NAT / Bridged / Host-Only networking?

VMWare: What is NAT vs. Bridged vs. Host-Only?

Get active network interface on Windows

I'm developing an application that provides a UI to windump, the packet sniffer. Windump has a "-D" parameter that lists all network interfaces it can find, and then you can specify which interface to listen on.

However, I'd like to avoid forcing the user to manually configure which interface to listen on. On Unix, I can obtain the right network interface (en0, en1, etc.) via a call to ifconfig and some parsing of the output, but I cannot locate any equivalent Windows API or command that can yield similar information—ipconfig doesn't seem to obtain this data.

Can anyone suggest either a Windows command-line tool or an API that can be called via VBScript to obtain this data so that I don't have to present the user with a dialog in my GUI telling them to select the right interface?

Optimal setting for advanced parameters for Realtek PCI-e GBE family network card

superusers.

I am trying to get the best possible setting for my Realtek PCI-e GBE family controller network card so that when it will be literally minimal or zero lag when playing online game. (before I destroy my keyboard because I am so tired of lag and disconnects in game)

Here is my current settings:

ARP Offload - Enabled
Auto Disable Gigabit - Disabled
Energy Efficient Ethernet - Disabled
Flow Control - Enabled
Green Ethernet - Disabled
Interrupt Moderation - Enabled
IPv4 Checksum Offload - Rx & Tx Enabled
Jumbo Frame - Disabled
Large Send Offload v2 (IPv4) - Enabled
Large Send Offload v2 (IPv6) - Enabled
Network Address - "Value" field empty, "Not Present" checked
NS Offload - Enabled
Priority & VLAN - Priority & VLAN Enabled
Receive Buffers - 512
Receive Side Scaling - Enabled
Shutdown Wake-On-Lan - Disabled
Speed & Duplex - 100Mbps full duplex
TCP Checksum Offload (IPv4) - Rx & Tx Enabled
TCP Checksum Offload (IPv6) - Rx & Tx Enabled
Transmit Buffers - 128
UDP Checksum Offload (IPv4) - Rx & Tx Enabled
UDP Checksum Offload (IPv6) - Rx & Tx Enabled
Wake on Magic Packet - Enabled
Wake on pattern match - Enabled
WOL & Shutdown Link Speed - 10 Mbps First

Please let me know asap !

Mac: number of bytes transmitted over interface

On linux, I'm used to typing ifconfig and looking for the line with "RX bytes" and "TX bytes" in it to find out how many bytes have been received and transmitted over a particular interface since boot. The line looks like this:

      RX bytes:106951129 (101.9 MB)  TX bytes:1577761831 (1.4 GB)

I tried running the same command in a terminal on a Mac (OS X, version 10.4.11) but didn't see this data anywhere. How do I get the same information from a Mac?

Edit: This is a test server, meant to simulate a typical out-of-the-box Mac install. So I need to avoid installing any programs if I can. A command-line tool would be ideal.

How to fix network connection dead on startup, but okay after disable/enable?

on Startup

When my system starts up, the internet connection is dead. This causes various problems with startup items such as updates and auto-start programs failing.

However, the connection is fine after going into Network and Sharing, Change adapter settings, then disabling and re-enabling the adapter.

Any suggestions on why this is happening and how to fix it?

System summary: Windows 7, 64 bit, Realtek PCIe GBE Family Controller, Linksys WRT610N router, Sci Atlanta cable modem.

UPDATE: Lately, the network connection for the system mentioned in this question is working about 80% of the time after startup. Have since updated to W7 SP1.

How to reinstall the host-only network adapter in VMware 7

I've this problem when I want to use "Host only" network adapter in VM-Ware 7.0 this is the error message:

The host-only adapter driver does not seem to be running. If you have not rebooted the host since installing the host-only network adapter, you need to do so before you can use this support. Otherwise, check the system Event Log for an explanation of why service VMnetAdapter did not startup properly. Failed to connect virtual device Ethernet0.

I looked at my device manager in the host system "Windows 7" but I couldn't find the VMware network adapter at all.

And I tried to reinstall it by "Virtual Network Editor" but it doesn't work

So please how to reinstall these drivers and adapters ?

Increasing link speed on OpenVPN (bandwidth)

I have bought a tunnel service by using OpenVPN. For a year I've had 10 Mbps max upload/download speed but now I've bought an additional 20 Mbps making the available total bandwidth 30 Mbps for me.

On their homepage there are some controls available for me, for example to restart the tunnel. I've done that. It also says that the speed has indeed been upgraded to 30 Mbps on their page. I also got an email that said they have upgraded the speed.

However after I reboot my machine, and OpenVPN has started up and is running as usual, when I look at the Windows Task Manager (opens when pressing CTRL+SHIFT+ESC) in the "Networking" tab I still have a link speed of only 10 Mbps.

Two adapters are listed: Local Area Connection 4 (10 Mbps) and Local Area Connection 5 (100 Mbps). LAC5 is my "real" adapter, I have a 100 Mbps Internet connection if I don't use a tunnel. LAC3 is the virtual adapter used by OpenVPN. The problem is that it is still showing 10 Mbps even though I have upgraded to 30 Mbps.

How can I fix this?

Can Somebody Explain About Wi-Fi Device Manager Settings And Power Settings In Windows 7?

Sometimes I have low Wi-Fi signal and I am curious about the Wi-Fi settings in Device Manager and Power Settings. I would like to get an exhaustive explanation about each, so let's start with Wi-Fi settings in Device Manager:

Screen continued:

I would like to understand every property in the "Property" scroll pane.

Now let's look at Power Settings:

I would like to know what impact the selected options have on Wi-Fi.

I'm running Windows 7 64-bit Enterprise with a Broadcom DW1530 Wi-Fi chipset.

How to Load Balance 2 Internet Connections on a Windows 7 machine?

It's sort of related to this particular question, but that one is on Mac. I am looking for similar solution on Windows 7.

I have 2 network connections:

• (Connection A) Wireless terminal connecting to ISP A (3G / EVDO internet provider)
• (Connection B) Broadband wired connection connecting to ISP B (Cable internet provider)

Both has access to the internet.

When I try connecting to a website and checking the networking tab on my Task Manager, I only see the network traffic being routed to only Connection A.

Is there a way to make the computer to utilize both network (in a sense using all the bandwidth available from both the Cable ISP and the 3G / EVDO ISP) at the same time?

If so, what do I need to do to set this up ... on Windows 7?

Here is a bit more info on my network connections (ipconfig /all):

PPP adapter Wireless Terminal:
IPv4: aa.bb.ccc.ddd(preferred)

Subnet mask: 255.255.255.255
Default Gateway: 0.0.0.0
DNS: aa.ee.f.ggg
     aa.ee.f.hhh
Primary Wins: jjj.ii.k.l
Secondary Wins: jjj.ii.k.m

Ethernet adapter LAN:
IPv4: 192.168.1.100 (connected to a router by wired that itself connect to a cable modem)
subnet mask: 255.255.255.0
Default gateway: 192.168.1.1 (the wireless router)
DHCP: 192.168.1.1 (the wireless router)
DNS: xxx.yy.zz.ww
     rr.sss.t.uuu

For my own privacy, I don't believe the actual number matters, the patterns are representative of the ip numbering scheme...

How can I determine the MAC address for a NIC in CentOS without using ifconfig?

CentOS 5.5

One of my CenTOS systems recently booted with the following error:

"Bringing up interface eth0: Device eth0 has difference MAC address than expected. ignoring."

When I run ifconfig -a there's no entry for eth0 and I'm reasonably certain that the static HWADDR entry in /etc/sysconfig/network-scripts/ifcfg-eth0 is incorrect.

Are there alternate ways for definitively determining what the correct MAC addresses are via the command-line? I was wondering if perhaps lspci could help? I don't have hwinfo available.