Service · Connectivity & security
Site connectivity: SD-WAN, VPN and security from one partner
KHTC plans and sources the secure interconnection of your sites: from classic IPsec VPNs to modern SD-WAN, managed firewalls and mobile backup over LTE/5G. We compare the carriers' concepts product-neutrally, design voice prioritisation for cloud telephony and Teams right in, and manage migration and operations, like all our telecom consulting, free of charge for you and provider-funded.
Typical problems we encounter
- grown point-to-point VPNs, every site its own island
- MPLS contracts expiring, SD-WAN offers impossible to compare
- home office and cloud broke the old network design
- firewall operations without in-house security staff
- one line failure takes a whole site offline
What KHTC delivers
- Current-state analysis: sites, bandwidths, applications and security requirements, before any technology talk.
- Concept comparison: IPsec VPN, SD-WAN or hybrid, rated product-neutrally for cost, operations and future-proofing.
- Security building blocks: managed firewalls, segmentation and secure remote access for home office and contractors.
- Resilience: LTE/5G backup, redundant paths and clean fail-over concepts for critical sites.
- Sourcing & migration: offers gathered, negotiated, and the switch coordinated site by site, no standstill.
How it works
- 1 · Understand: We review your contracts, invoices and requirements, across every provider, with no obligation.
- 2 · Compare: You get a written comparison of what the market offers for your situation, including “keep what you have” when that wins.
- 3 · Implement: We negotiate, order, port and migrate, coordinated so your operations never stand still.
- 4 · Support: One dedicated contact for incidents, changes and renewals, for the whole contract term, not just until signature. Ongoing invoice auditing is available as a bookable add-on.
Who this is for
- companies with two or more sites
- branch networks and logistics
- organisations with home-office and cloud strategies
- public-sector clients with procurement requirements
SD-WAN or classic VPN, which fits when?
SD-WAN shines when many sites, cloud applications and changing requirements meet: central control, per-application prioritisation, fast onboarding of new branches. A cleanly built IPsec VPN often remains the more economical choice for a few stable sites. We cost both paths transparently, including the operating costs offers like to hide.
Security belongs in the network, not beside it
Site connectivity without a security concept is half a solution: we design firewalling, segmentation and secure remote access in from the start, and use the carriers' managed-security services where no in-house team exists. Voice prioritisation keeps cloud telephony and Teams clean under load.
From the field
The most common planning mistake in site networks is not the technology, it is the missing backup: only a second path, for example over LTE/5G, turns a connection into something dependable.
FAQ: SD-WAN & site connectivity
Short answers, happy to go deeper in a personal conversation.
What is SD-WAN, in plain terms?
SD-WAN connects your sites through a centrally managed software layer instead of rigidly configured individual links, so applications can be prioritised, multiple lines combined per site, and new sites onboarded far faster.
Do we need SD-WAN or is a VPN enough?
Rule of thumb: few stable sites without heavy cloud use, a clean IPsec VPN is often more economical. From a handful of sites, with cloud telephony and Teams, SD-WAN plays to its strengths. We calculate both for your situation, outcome open.
Who operates the firewalls?
The carriers' managed-security teams run them, we pick the right package, steer the providers and escalate for you. You keep one contact: us.
How does migration work without downtime?
Site by site, in parallel operation: the new path is built and tested, including backup, before we switch, with a documented way back.
Free telecom audit for this area
We review contracts and invoices and give you a written summary of what is possible, no obligation, no forced switch.