Sharing a WiFi connection to another computer via ethernet

168gr

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My ISP provides service only via 802.11. I use laptop A most of the time. The captive portal for the service provider only allows one login per account at a time. The policy is intended to prevent multiple people sharing one account. It's just me, I'm the only user, but very occasionally I'd like to have a 2nd laptop access the internet simultaneously. No abuse, just the simple convenience of not having to logout from A if I need to use B for 30 seconds.


What I want to set up seems simple and it probably is:

WiFi Internet <---> Laptop A <---> ethernet cable <---> Laptop B

such that Laptop B can share A's active WiFi connection without having to request its own unique address from the ISP.


At present, Laptop A has its network interfaces set up so:
- WiFi is connected, active, functional. Selected the "Yes turn on sharing and connect to devices" in sidebar.
- Under the wired network properties IP Version 4, I manually set addresses to be
IP 192.168.10.1
Subnet 255.255.255.0
Gateway 0.0.0.0

Laptop B has only a wired network, set to
IP 192.168.10.2
Subnet 255.255.255.0
Gateway 192.168.10.1

A & B can connect directly to each other, share folders, etc.

What do I need to do in order to get laptop B to transparently use A's WiFi connection? My guess is that A needs to be set up to do some routing between the internet side and the 192.168.10 subnet, and B needs to be set up to look to A as its "ISP" ... but I don't know where to begin.

Thank you.
 

My Computer

System One

  • OS
    Windows 8
    Computer type
    Laptop
What you want is to be able to create an ad hoc connection wirelessly. You may want to look into this post and see if this solves your problem however please note that it may not work due to your ethernet connection in between though I am not entirely sure since I have not tried this...

How To Create Wireless Ad Hoc Internet Connection In Windows 8

Note   Note
You will need a crossover cat5e or cat6 ethernet cable if you are connecting two computers together



Hope This Helps,
Josh! :)
 

My Computer

System One

  • OS
    Windows 8.1 Pro 64-bit ; Windows Server 2012 R2 Standard
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Custom Built
    CPU
    Intel Core i5 2400 @ 3.10GHz
    Motherboard
    Foxconn H67MP-S/-V/H67MP (CPU 1)
    Memory
    8.0GB DDR3 @ 665MHz (2GBx4)
    Graphics Card(s)
    AMD Radeon HD 6800 Series (Sapphire/PCPartner)
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    SMB1930NW + AOC 2243W
    Screen Resolution
    1440x900 + 1920x1080
    Hard Drives
    977GB Seagate ST31000524AS ATA Device (SATA)
    250GB WD iSCSI attached drive
    PSU
    750W PSU
    Case
    Novatech Night
    Keyboard
    Dell Standard PS/2 Keyboard
    Mouse
    R.A.T 7 Gaming Mouse
    Browser
    Google Chrome
    Other Info
    Optiarc DVD RW AD-5260S ATA Device
This question comes up here about 3 times a month. You see Ad Hoc is a temporary hosted wireless connection, wireless to wireless only.

ICS is sharing an Ethernet connection, wired to wired only. There is no such thing as sharing a wireless connection to a wired connection. You may get it to work if you are lucky but it's certainly not a supported configuration.

As far as I'm aware not one person using Windows 8 has succeeded in making a wired to wireless connection work with any type of reliability.

Since the Op has a wireless connection and a second laptop with wireless that needs to connect to the internet why not use the connectify software or the built in netsh commands to create the Ad Hoc network?

How To Create Wireless Ad Hoc Internet Connection In Windows 8

Connectify - Turn your PC into a Wi-Fi Hotspot and Get Faster Internet

And by the way, with most any modern network interface, crossover cable is no longer required for ICS connections, the capability is built into the NIC these days.
 

My Computer

System One

  • OS
    Windows 8.1 Pro WMC
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home built
    CPU
    Q9650 @ 4.05 GHz
    Motherboard
    Gforce 780i SLI FTW
    Memory
    8GB Gskill DDR2 1200Mhz
    Graphics Card(s)
    GTX-480
    Sound Card
    Asus D2 Xonar
    Monitor(s) Displays
    HannsG
    Screen Resolution
    1680x1050
    Hard Drives
    Gskill 120GB SSD
    PSU
    Thermal Take 1000watts
    Case
    Thermal Take Xtreme
    Cooling
    9 fans air cooled
    Keyboard
    G15 logitech
    Mouse
    G9 logitech
    Internet Speed
    50mbps
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