LAN prerequisites

In a local area network, a network speed of at least 1GB/sec is recommended. Between servers, a network speed of at least 1GB/sec is required. Moreover, the server's intercommunication connections (IIS, SQL, Exalead) must be on a separate subnet.

WAN prerequites

GN4 works also over WAN.

An example of the real-life configuration: on a site, 15 users produce 24 pages per day, connected to a server farm near Milan. In a day they download around 1 GB of data and upload around 160 MB. During peek production they download 216 MB per hour - corresponding to a 0.5 Mbps bandwidth.

For a single remote user, a typical ADSL bandwidth (2-5 Mbps of download speed, 0.3-0.5Mbps of upload speed) is more than enough for a comfortable work.

The latency value is important: < 40ms is good, and 50-100ms is acceptable.

About secure connection

You can connect to GN4 via HTPP or via HTTPS (HTPP secure) - both are supported. For HTTPS connections, install certificate(s) as required.

About rate limiting

In computer networks, rate limiting is used to control the rate of traffic sent or received on a network interface. Traffic that is less than or equal to the specified rate is sent, whereas traffic that exceeds the rate is dropped or delayed. A device that performs rate limiting is a rate limiter.

Rate limiting is performed by policing (discarding excess packets), queuing (delaying packets in transit) or congestion control (manipulating the protocol’s congestion mechanism).

No rate limiting on http traffic has to be active in a WAN serving GN4.

About speed and latency between servers

Speed and latency between servers is extremely important. We recommend to use the same VLAN, when possible, or to accept worse performances otherwise.

About routers and switches between servers

If the GN4 system does not perform well, one of the first thing to look at are routers and switches between servers that can cause a variety of strange slowdown problems etc.