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The management and monitoring tools we use require network access between your servers and ours. This page details the access that is required.

Both the server names and the IP addresses for our servers have been provided in the following tables. If a you manage a firewall in your network, it would be preferable to use the server names in the firewall rules (if possible) so that we can migrate services from one IP address to another without requiring any changes to your firewall.

Connectivity Options

Ideally, we would have direct connectivity between your servers and ours as detailed below. However, we recognise that this may not always be possible; for example, you may have multiple servers behind one public IP address, making it difficult for us to directly connect to each of your servers.

Under those circumstances, we require:

  • direct ssh access as detailed below (“ssh access”) from our servers to one of your servers (the “gateway server”), and
  • ssh access from the gateway server to your remaining servers, and
  • outbound connections from each of your servers to ours as detailed below (“Outbound connections to our servers”), including OpenVPN access

Inbound Connections To Your Server

The following connections are required from our servers to yours.

ssh Access

 

ProtocolDestination PortSourceIP Address
TCP22thames.tiger-computing.co.uk5.133.183.84
TCP22lugg.tiger-computing.co.uk31.210.130.202
TCP22eden.tiger-computing.co.uk31.210.128.181
TCP22Our office LAN81.187.162.2

 

Server Monitoring

 

ProtocolDestination PortSourceIP Address
Ping (ICMP)-eden.tiger-computing.co.uk31.210.128.181
TCP5666eden.tiger-computing.co.uk31.210.128.181
TCP6556 and 6557fleet.tiger-computing.co.uk87.237.68.165

Outbound Connections To Our Servers

OpenVPN Access

 

ProtocolDestination PortDestinationIP Address
UDP1194 and 1195thames.tiger-computing.co.uk5.133.183.84
UDP1194ouse.tiger-computing.co.uk109.69.80.200

 

Configuration Management Server

 

ProtocolDestination PortDestinationIP Address
TCP8140tamar.tiger-computing.co.uk31.210.130.200
TCP61614tamar.tiger-computing.co.uk31.210.130.200

 

Software Distribution Servers

 

ProtocolDestination PortDestinationIP Address
TCP80Any0.0.0.0
TCP443Any0.0.0.0

 

Network Time Servers

 

ProtocolDestination PortDestinationIP Address
UDP123Any0.0.0.0

 

Outbound Email Access

At a minimum, your servers need to be able to send email  to the following two addresses:

  • logcheck@tiger-computing.co.uk
  • security@tiger-computing.co.uk

Usually, the servers will send their own email directly, but it is possible to use any specified SMTP relay, or dedicated aliases that relay to those two addresses if that is preferred.