Peer1IX
Internet Exchange
Services

Interconnection

Internet ExchangeMicro PoPsEdge Data Centers

Network Services

Data Center to Data CenterVirtual Connectivity HubData Center to CloudCloud to CloudPeer1ix Cloud RouterPeer1ix Virtual EdgeNAT GatewayPeer1ix PortVirtual Cross Connect

Security Services

DDoS ProtectionPeer1ix FWaaSIPsec Tunnel

Cloud Interconnect

Cloudflare Network Interconnect
Locations
Network toolsAll-in-One Network ReportBGP Looking GlassRPKI ValidatorBGP Security & Hijack CheckIP WHOISAS WHOISBGP Route ExplorerASN InsightsBGP Hijacks & Route LeaksInternet Outage TrackerCountry Internet InsightsTop Domains RankingDNS LookupSubnet CalculatorWhat Is My IP
BlogAboutContact Get connected

IPsec Tunnels Explained: Secure Site-to-Site Connectivity

· 1 min read · Peer1IX Team

IPsec Tunnels Explained: Secure Site-to-Site Connectivity

IPsec creates encrypted tunnels across untrusted networks. How it works and how managed termination on Peer1IX simplifies it.

What IPsec does

IPsec encrypts and authenticates IP traffic between two endpoints, creating a secure tunnel across an untrusted network like the internet.

How a tunnel forms

  1. IKE (Internet Key Exchange) — the endpoints authenticate each other and agree on keys. IKEv2 is the modern standard.
  2. IPsec Security Associations — traffic is encrypted and integrity-protected using the agreed algorithms.

Site-to-site use

A branch router establishes a tunnel to a hub. Traffic between branch and hub is protected regardless of the internet path in between.

Managed termination

Peer1IX IPsec Tunnel provides the hub end at our edge locations. Your sites connect to the nearest one, and the tunnel lands directly on your private network on the fabric — with access to data centers, clouds and services.

Where it fits

Remote sites, temporary locations, backup paths for private circuits and partner access.

Ask about IPsec Tunnel.

IPsecVPNsite-to-site

Keep reading

Network Engineering

Performance Tuning for High-Throughput IPsec

Encryption costs CPU, and tunnels can underperform. Practical ways to get more throughput from IPsec.

 Security

DDoS Protection for ISPs: Protecting Subscribers and the Network

ISPs face attacks aimed at their subscribers, their infrastructure and their customers' businesses. A layered approach to protection.

 Security

VXC Security: Who Can See My Traffic?

Virtual cross connects are private, but it is worth understanding exactly what that means — and when to add encryption.