Closed User Group 
A private environment connecting multiple sites, suppliers, partners and customers, with all traffic passing through one secure connection.
Closed User Group at LINX
A closed user group is a Layer 2 multipoint environment where several parties connect and exchange traffic privately. It runs independently of standard peering, delivered either on a dedicated port or as a VLAN on the port you already have.
A private network you control
One group, many parties
Multipoint rather than point-to-point, so sites, suppliers, partners and customers all sit in the same private environment.
You control the group
Each group has a controller who grants access, allocates bandwidth and authorises any changes to the environment.
Use your existing port
Delivered on a dedicated port, or as a VLAN on the port you already use for peering, so no new infrastructure is needed.
Available at LINX
Available across our global interconnection hubs.
What to expect
Technical specification
Layer 2 multipoint to multipoint services over 802.1Q tagged interfaces, on dedicated or existing 1GE, 10GE or 100GE ports, with a maximum MTU of 1,500 bytes.
Traffic limits
Broadcast and unknown unicast traffic is limited to 2,000kbps, with bursts of up to 10,000kbps.
Getting started
Order through the member portal. Service statistics are available there once the group is live, and the member user guide covers setup.
NaWas pioneers Closed User Group
DDoS protection provider NaWas, part of NBIP, was the first LINX member to use Closed User Group. Delivering its services direct to UK members over a private connection gave NaWas greater control over its network and a faster, more reliable service for the networks it protects.
“The mix of increased usage and reliance on the Internet and remote working has meant hackers have got wiser and have far more opportunities to attack. We are really pleased to be using the LINX Closed User Group service to now deliver our DDoS protection service, we can deliver a faster and improved service to our UK members.”
Frank Dupker, European Network Manager, NaWas
Order through the member portal, or send us a message and the team will be in touch