“Headquarters is in Beijing, and we’ve just opened two branch offices and a warehouse, each with its own network — files can’t be shared between them, and remote access to the ERP and finance systems from other locations is slow and laggy.” Once a company opens a second office, how to connect the networks at several locations into one secure, stable internal network becomes an unavoidable question. Today we’ll lay out the mainstream options for multi-branch and multi-store networking at small and medium-sized businesses, who each one suits, how to choose, and what it costs.
The short answer first
There is no single right answer for multi-branch networking. What matters is the number of branches, the required level of stability, and the budget.Adequate budget with high requirements → carrier private line / SD-WAN; limited budget with frequently changing sites → encrypted tunnel networking (software-based); only a few people needing access to headquarters systems → zero trust remote access is enough, and you may not need “networking” at all. For most small and medium-sized businesses, the best value comes from combining “an encrypted tunnel that links several sites into one internal network + zero trust access control on key systems.”
Four mainstream options and who each suits
| Option | Best-fit scenario | Approximate cost |
|---|---|---|
| Carrier private line (SD-WAN/MPLS) | Fixed branches with extremely high requirements on latency and packet loss (e.g., real-time production, video dispatch) | A few hundred to a few thousand RMB per line per month; expensive but stable |
| Encrypted tunnel networking (site-to-site) | Most small and medium-sized businesses, where a few sites need to share files, ERP, printing, and surveillance | Runs on your existing broadband; mainly equipment plus implementation fees, with very low monthly cost |
| Zero trust remote access | No need for “full-site interconnection” — only some staff need to reach a few systems at headquarters | Subscription per account; activated in software, with no hardware to buy |
| Public cloud relay | The systems everyone needs to access are already hosted in the cloud | Cloud instance plus bandwidth fees, billed by usage |
“Networking” and “remote access” are not the same thing
Many companies open with “I want to network my branch offices,” but on closer questioning it turns out to be just a few employees occasionally connecting to the ERP or file server at headquarters. These two needs have completely different solutions:
- Site-to-site networking: connects the entire LAN at location A with the entire LAN at location B, so devices on both sides behave as if they were on the same internal network — suited to branches that need mutual access to printers, surveillance, shared drives, and internal systems, in other words “full-site interconnection.”
- Zero trust remote access: does not interconnect whole networks; it only lets authenticated users reach the specific machines and systems they are authorized for — more secure (business systems are invisible to the outside) and easier to manage (authorization by account, one-click revocation on departure), suited to “a few people accessing a few systems.”
In practice, the two are often used together: use encrypted tunnels to link fixed sites into an internal network, then layer zero trust access control over sensitive systems such as finance and ERP — convenient and secure at the same time.
Key points to weigh when choosing
- Stability: for solutions that cross regions over the public internet, check whether they support dual links and automatic failover, so a single outage doesn’t bring an entire branch to a standstill.
- Scalability: you may have 3 sites today and 8 next year; the solution should let you add sites smoothly rather than starting over from scratch.
- Who maintains it: if you have no dedicated IT staff, choose a solution that supports centralized remote configuration and remote troubleshooting, so you don’t end up with equipment nobody can manage.
- Security: traffic across the public internet must be encrypted; don’t expose sensitive systems directly — add authentication and least-privilege controls.
- Compliance: for industries subject to MLPS, confirm that the solution’s control plane, data residency, and audit capabilities meet the requirements.
The lowest-hassle setup for small and medium-sized businesses
For a company without a dedicated network engineer, the least troublesome approach is to hand “networking + secure access + day-to-day operations” to a single service provider. In the Beijing area, for example, Siwenlide can package multi-branch networking in one go: surveying the current network status at each site, designing the networking plan (private line, tunnel, or cloud relay, selected to fit), deploying network equipment with dual-link failover, connecting the sites into a stable internal network, and layering sTrust zero trust access control over key systems such as ERP and finance — business systems invisible to the public internet, authorization by account, one-click revocation on departure, stable direct connections within China, and software-based activation with no hardware to buy. If network issues arise later, the same team handles troubleshooting and maintenance remotely and uniformly, effectively giving the company an outsourced network operations partner it doesn’t have to “keep.”
Frequently asked questions
Q: Do I have to get a carrier private line to network several branch offices?
A: Not necessarily. A private line is stable but expensive, and suits scenarios with extremely high latency and packet-loss requirements. Most small and medium-sized businesses do fine with existing broadband plus encrypted tunnel networking, at much lower cost — the key is proper dual-link failover.
Q: If only a few people at the branch need to connect to the ERP at headquarters, do we still need networking?
A: No full-site networking is needed. For “a few people accessing a few systems,” zero trust remote access is the better fit — only authorized users and systems are allowed through, which is both more secure and easier to manage.
Q: Sites are added and removed frequently (opening or closing stores) — how should we choose a networking solution?
A: Choose one that lets you add sites smoothly and configure everything centrally from a distance (such as software-based tunnel networking), not one that requires redoing construction every time a site is added.
Q: Our company has no dedicated IT staff — who maintains the network after it’s set up?
A: Hand it to a provider that can operate and maintain it remotely; day-to-day monitoring, troubleshooting, and configuration changes are all done remotely, so you don’t need to employ your own network engineer.
Q: Is data secure when networking across regions?
A: As long as all traffic is encrypted end to end and sensitive systems have authentication and least-privilege controls layered on, it is secure. Conversely, mapping systems directly to the public internet is the most dangerous practice of all.
Several offices or stores you’d like connected into one stable, secure internal network?
Siwenlide provides one-stop multi-branch networking services for small and medium-sized businesses in Beijing: site survey and solution selection, equipment deployment, dual-link failover, zero trust hardening for key systems, and unified remote operations — all handled by one provider. Call 400-686-2011 or visit siwenlide.com; for remote access products, see strust.siwenlide.com.
