How to Share Internet from a USB Modem to a Wi-Fi Router via a Computer: A Complete Guide

• If the computer has an address 192.168.137.1 (standard for ICS), set the router 192.168.137.2.
• Turn it off DHCP server on the router (so that the computer distributes IP addresses).
• Save the settings and reboot the router.
• Connect the router to the computer with a cable (if it hasn’t been connected yet).
• Check that the indicator light on the router is on. LAN-the port to which the cable is connected.

If your router supports the mode Bridge or Client, you can use it to simplify the setup. For example, in Keenetic it's done like this:

1. Go to "Internet" → "Other Connections".
2. Add a new connection of the type "Bridge".
3. Specify the interface LAN, to which the computer is connected.
4. Save and apply the settings.

⚠️ Attention: On some routers (for example, Zyxel Keenetic with firmware NDMS V2) After disabling DHCP, you may lose access to the web interface. In this case, reset the router using the button Reset and repeat the setup, having first manually assigned a static IP to the computer.

5. Checking the connection and troubleshooting

After setting up ICS and the router, check if the internet is working on devices connected to the router's Wi-Fi. If there's no connection, follow the troubleshooting steps:

Step 1: Check the connection between your computer and the router

Open Command line on the computer (Win + R → cmd) and run the command:

ping 192.168.137.2

If pings are successful (no packet loss), the connection between the PC and the router is established. If not, check:

• 🔌 The cable is connected to the correct port (LAN, and not WAN).
• 🔧 It's disabled on the router DHCP and the correct one is assigned IP.
• 🔄 On the computer in Ethernet Properties protocol enabled IPv4.

Step 2: Checking Internet distribution

On your computer, run:

ping 8.8.8.8

If you can ping, but there is no internet on your router, the problem is in the settings. ICS or firewall.

Typical errors and solutions:

6. Connection optimization: how to increase speed and stability

If your internet connection is working but the speed is slow, try the following optimization methods:

For USB modem:

• 📶 Signal booster: Use USB extension cable with a ferrite ring or repeater (For example, Huawei B315 in repeater mode).
• 🔄 Changing APN: Sometimes operators limit the speed of standard access points. Try manually entering the APN:
  • MTS: internet.mts.ru
  • Beeline: internet.beeline.ru
  • Megaphone: internet
  • Tele2: internet.tele2.ru
• 🔋 Nutrition: Connect the modem to USB 3.0 (blue port) or use powered USB-hub, if the modem is unstable.

For router:

• 📡 Wi-Fi channel: In the router settings, select the least loaded channel (use utilities like Wi-Fi Analyzer for ether analysis).
• 🔄 Firmware: Update your router firmware to the latest version (especially relevant for TP-Link And ASUS).
• 🔒 QoS: Turn on Quality of Service and prioritize traffic for important devices (eg. Smart TV or a work laptop).

A critical point: some USB modems (for example, Yota Many or MegaFon M150-2) When distributing via ICS, the speed is limited to 10-20 Mbps, even if the plan allows for more. This is due to hardware limitations of the modem chipset. In this case, the only solution is to replace the modem with a model that supports it. HiLink (For example, Huawei E3372h).

7. Alternative distribution methods (for advanced users)

If standard ICS does not work or you need additional features (eg. VPN or traffic shaping), consider alternative methods:

Method 1: Setup via Bridge (bridge)

This method combines the modem and router into one network without NAT, which is useful for IP cameras or VoIP phones.

1. On your computer, open Command line on behalf of the administrator.
2. Run the command to create the bridge:

   netsh interface bridge add name="BridgeModemRouter"

3. Add modem and Ethernet interfaces to the bridge:

   netsh interface bridge add interface name="Local Area Connection" bridge="BridgeModemRouter"
   netsh interface bridge add interface name="Ethernet" bridge="BridgeModemRouter"

4. Configure your router to receive IP By DHCP (turn on DHCP client).

Method 2: Using Linux (for experienced)

If you have a computer with Ubuntu or Debian, distribution setup is performed through iptables And dnsmasq:

sudo sysctl -w net.ipv4.ip_forward=1
sudo iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE
sudo iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT

Where eth1 — modem interface, eth0 — an interface that looks at the router.

Method 3: Third-party utilities for Windows

If ICS refuses to work, try the following programs:

• 🔹 Connectify Hotspot — a plagiarized, but simple utility for distributing the Internet.
• 🔹 MyPublicWiFi — a free alternative with support WPA2.
• 🔹 Virtual Router Plus — open source software for creating a virtual access point.

⚠️ Attention: When using third-party utilities, disable the built-in Windows Firewall and antivirus software—they can block traffic. Also, keep in mind that such programs often contain ads or collect data (read the license agreements!).

FAQ: Frequently asked questions about setup

Is it possible to share internet from a USB modem to a router without a computer?

Yes, but you need it for that 4G router with USB port (For example, TP-Link TL-MR6400 or ASUS 4G-AC53U). Connect the modem to the router's USB port and configure it as the primary connection in the web interface. Regular routers (without a 4G module) won't work this way.

Why does sharing stop working after restarting my computer?
This is because Windows does not always restore settings correctly. ICS after reboot. Solutions:
1. Turn it off and on again General access in the modem connection properties.
2. Use script to automatically enable ICS at startup (can be created via Task Scheduler).
3. Check if Windows updates are resetting your settings (disable automatic reboot).
How to share internet from a modem to a router and simultaneously use it on a PC?

To do this, the computer needs to receive the Internet not through NDIS-connecting the modem, and through RNDIS or ECMSome modems (for example, Huawei E3372 in mode HiLink) create a separate connection for sharing without blocking the main one. If your modem doesn't support this, you'll have to use second USB modem or virtual machine for distribution.

Is it possible to distribute the Internet to several routers in this way?

Technically yes, but you will need:

1. Set up on your computer multiple network bridges (one for each router).
2. Use VLAN to separate traffic (advanced setup, requires support from routers).
3. Please note that the USB modem's bandwidth is limited (usually up to 100 Mbps), and when connecting multiple routers, the speed will be divided between them.

For such tasks it is better to use 4G router with multiple SSID support or Mikrotik router (For example, MikroTik hAP ac).

Will this circuit work with a Yota USB modem?
Yes, but with some reservations:
• Modem Yota Many in mode NDIS often blocks distribution. Put it in mode Modem-only via AT commands or firmware.
• Yota uses non-standard APN (yota.ru), which may not work with ICS. Try internet.yota.
• Speed ​​may be limited at the operator level (even if the tariff is “unlimited”).