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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteThe historical solution was a small Ethernet LAN with one computer acting as the dial-up host. Every PC connected to that LAN; only the host connected to the telephone line and modem. The host then shared its dial-up session with the client PCs. The modem was not the LAN, and a hub did not provide Internet access by itself.
This is now a retrocomputing or legacy-networking project. The late-1990s equipment and Windows assumptions described below are not sensible choices for a normal 2026 home network.
What the setup was designed to do
The arrangement solved a simple problem: several nearby Windows computers needed to use one dial-up Internet account. The local Ethernet network carried traffic between the machines, while one modem carried traffic from the host to the Internet. The original guide explains that the computers had to communicate locally before Internet sharing could work: Wiring your Local Network – DialUp.
- LAN: the local Ethernet connection between all computers.
- WAN/Internet link: the telephone-line call made by the modem.
- Host: the computer with the modem and connection-sharing software.
- Clients: the other computers that use the host’s shared connection.
A historical design, not a 2026 shopping list
The source discusses V.90 56-kilobit-per-second modems, Windows 98, 10BASE2 coax, 10BASE-T hubs, serial or parallel Direct Cable Connection, and period products such as the Netgear EN104 and Anchor Chips ezLink. It also notes that phone-line and wireless networking products were only emerging around late 1998 and early 1999. Those references date the guide. Current dial-up availability, ISP compatibility and V.90 support vary by provider and location and are not established here.
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- UTP Crossover Cable: The cable features a crossover wiring scheme, which is T-568A to T-568B, with Cat6 UTP cable allowing for direct device-to-device connections without the use of a network switch.
- Visual design: Two colors connectors are applying to distinguish two different wiring scheme, the T-568A connection use blue connector, while T-568B use clear transparent connector.
- High Quality: Gold-plated contact and pure copper conductors are to support high-speed and stable data transfer, comply with UL listed.
- Universal Compatibility: XANHAM crossover Ethernet cable is compatible with standard RJ45 connectors, making it suitable for a wide range of devices, including computers, gaming consoles, router, network switch, and more.
- Durable and Reliable: The connectors are injection moulding with the cable and constructed with high-quality PVC, XANHAM crossover Ethernet cable offers durability and reliability.
For a new network today, a router or gateway and an Ethernet switch are the normal architecture. The rest of this article describes the historical wiring accurately for archival work, emulation and retrocomputing.
The basic architecture
Telephone line ── Dial-up modem ── Host PC ── LAN ── Client PCsThe modem cable terminates at the host computer. It does not plug into the coaxial Ethernet bus or into a hub as though it were an Ethernet device. First build and test the LAN; then configure the host and clients for Internet Connection Sharing using documentation for the exact operating system edition.
Hardware checklist
- One dial-up modem, telephone service and a compatible dial-up ISP account.
- One Ethernet network interface card (NIC) in every computer.
- Ethernet cabling matching the selected topology.
- Either 10BASE2 coax with BNC connectors and two 50-ohm terminators, 10BASE-T twisted-pair cabling with a hub, or a crossover cable for exactly two period Ethernet PCs.
- Optional LAN devices such as a printer or print server.
The original article recommended a single 56,000-bit-per-second modem (the V.90 era standard) because the host shares that one connection; it did not require one modem per computer: source.
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- Shielded Crossover Cable: The cable features a crossover wiring scheme, which is T-568A to T-568B, with Cat 6 FTP Shielded cable allowing for direct device-to-device connections without the use of a network switch.
- Visual design: Two colors connectors are applying to distinguish two different wiring scheme, the T-568A connection use blue connector, while T-568B use clear transparent connector.
- High Quality: Gold-plated contact and pure copper conductors are to support high-speed and stable data transfer, comply with UL listed.
- Universal Compatibility: XANHAM crossover Ethernet cable is compatible with standard RJ45 connectors, making it suitable for a wide range of devices, including computers, gaming consoles, router, network switch, and more.
- Durable and Reliable: The connectors are injection moulding with the cable and constructed with high-quality PVC, XANHAM crossover Ethernet cable offers durability and reliability.
Choose the wiring method
| Situation | Historical choice | Reason |
|---|---|---|
| Exactly two PCs and no expansion | 10BASE2 or a crossover cable | Fewest components |
| Several clients | 10BASE-T with a hub | Star wiring is easier to expand and isolate |
| Likely expansion | 10BASE-T | Add another hub port or replace the hub more easily |
| Cables exposed to damage | 10BASE-T | One failed drop need not break every computer |
10BASE2 (Thinnet) bus
10BASE2 uses one coaxial cable as a bus. Each PC attaches through the appropriate BNC hardware, and the two physical ends of the cable must have terminators.
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[50-ohm terminator]──[PC 1]──[PC 2, host + modem]──[50-ohm terminator]To add a machine, the cable run is opened at the required point and the new connection is inserted; the terminator remains at the new final endpoint. The source presents 10BASE2 as a low-cost option for a small number of machines and lists 10 Mbps and a 600-foot maximum cable length for the configuration it discusses: historical specification table.
- A missing, extra or misplaced terminator can stop the entire bus.
- A damaged coax section or poorly seated BNC connector can affect every computer.
- Do not confuse 10BASE2 Ethernet coax with coaxial cable used for cable-television Internet.
- The 600-foot figure belongs to the historical technology described, not to every coax installation.
10BASE-T (UTP) with a hub
10BASE-T gives each computer its own twisted-pair run to a central hub.
Rank #3
- Cabling for category 5 (Cat5) and 5e (Cat5e) applications
- Length: 10-ft. color: Yellow with green connectors. Connectors: RJ45 male
- Cross-over wiring designed to connect Switch-to-Switch or PC-to-PC
- Feature molded connectors with integral strain relief
- PVC 4-pair stranded UTP
[Telephone line]
│
[Dial-up modem]
│
[Host PC]
│
[Hub]
┌───────┼───────┐
[Client 1] [Client 2] [Client 3]No terminators are used. Use Ethernet UTP, not ordinary telephone cable: it may look similar but is wired and specified differently. With period equipment, connect the ordinary host and client cables to normal hub ports; the source specifically warns against using the hub’s uplink port for the illustrated host-to-hub connection. A hub only repeats local Ethernet frames; it is not a router and does not share the dial-up call.
The source lists 10BASE-T as 10 Mbps Ethernet and says Category 5 UTP with suitable equipment could reach 100 Mbps, with a 328-foot maximum cable length in its historical table. Those are technology figures from that guide, not a recommendation to install old hub-based wiring today: source.
Direct crossover cable for two computers
[Host PC + modem] ──[period Ethernet crossover cable]── [Client PC]A crossover cable directly connects two compatible period NICs without a hub. It is limited to two computers and offers no convenient expansion. Using a straight-through cable where the historical adapters require crossover wiring will leave the link unusable. Do not generalize this requirement to all modern Ethernet ports; contemporary devices may negotiate connections differently.
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- ANSI certified T1 cable, Levels 1, 1A, and 1C
- Complies with ANSI T1.403 Carrier-to-Customer Installation-DS1 Metallic Interface
- Cross-over T1 wiring configuration
- Available in 3ft, 5ft, 7ft, and 10ft stocked lengths
- Custom length cables available
Historical performance in context
| Technology discussed in the source | Speed stated | Cable-length figure stated |
|---|---|---|
| 10BASE2 / Thinnet | 10 Mbps | 600 ft maximum |
| 10BASE-T with Category 5 UTP and appropriate equipment | Up to 100 Mbps | 328 ft maximum |
Actual throughput is constrained by the slowest component. Even a 100 Mbps LAN does not make a dial-up session fast: the LAN speed mainly benefits local file or printer sharing, while Internet traffic remains bounded by the modem and telephone connection.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Build and configure the historical network
- Confirm that the intended host has a working dial-up modem, telephone connection and ISP credentials.
- Install a compatible NIC in every computer and install the correct driver for its operating system.
- Choose 10BASE2, 10BASE-T, or a two-PC crossover arrangement.
- Install the matching cable, connectors, hub and terminators, keeping the modem attached only to the host.
- Check physical link indicators where available, then verify that the computers can communicate over the LAN without dialing.
- Configure TCP/IP and local file or printer sharing according to the exact Windows version and edition.
- Enable that system’s Internet Connection Sharing feature on the host and configure clients to use the host, following verified period documentation rather than assuming modern Windows menu paths.
- Test local sharing separately from Internet access, then place a test dial-up call and verify a client connection.
The retrieved guide ends at the transition from physical wiring to LAN software configuration. Exact driver, TCP/IP and Internet Connection Sharing screens differ by Windows release, so a reconstruction should use documentation for its specific release and hardware.
Troubleshooting by symptom
No computer can see another computer
- Check NIC installation and drivers.
- For 10BASE2, inspect every BNC joint and confirm exactly one terminator at each physical end.
- For 10BASE-T, verify that each cable is Ethernet UTP and is plugged into a normal hub port.
- For a two-PC link, confirm that the cable is the crossover type required by the period NICs.
The LAN works, but clients have no Internet
- Confirm that the modem is connected to the host, not the hub.
- Confirm that the host can dial and browse independently.
- Check that Internet Connection Sharing is enabled on the host and that clients are configured for the host’s shared service.
- Keep local file/printer sharing tests separate from the dial-up test; success on one does not prove success on the other.
The network fails after adding a 10BASE2 computer
Recheck the cable chain and move the terminator so it remains at the new final endpoint. A break anywhere in the bus can interrupt all attached PCs.
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Files are exposed unexpectedly
Sharing a dial-up host can expose local resources. Share only what the reconstruction needs, use the narrowest permissions available for that operating system, and disconnect or disable sharing when the host is no longer isolated.
What is obsolete and what remains useful
Direct Cable Connection, USB networking kits, V.90 modems, ISA-era NICs, 10BASE2 components and standalone hubs are period options, not mainstream 2026 purchases. Their value is historical compatibility. The enduring principle is the topology: connect the computers into a LAN, attach one Internet uplink to a host or gateway, and configure sharing only after local connectivity works. For a modern household, replace the host-based dial-up arrangement with a current router or gateway and switch.
The Bottom Line
For a faithful dial-up reconstruction, use one modem on a host PC and connect every computer to that host through a tested LAN: terminated 10BASE2, hub-based 10BASE-T, or a two-PC crossover cable. Treat the equipment and Windows software as historical, and verify operating-system-specific sharing instructions before attempting the final configuration.
Quick Recap
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