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 invoice checks – for the whole contract term, not just until signature.
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.