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Virtual Servers | What IPv4 addresses should be whitelisted for service monitoring? Print

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Within this guide, we aim to outline and demonstrate how you can ensure your service is always monitored automatically by our internal systems, enabling our teams to respond in the event of incidents.

1. You must ensure the following IPv4 address(es) are whitelisted on your server's firewall (this may be IPTables, FirewallD or UFW depending upon your preference and operating system):

  • (, located in Dusseldorf, Germany).

2. You may use the following sample commands to whitelist the above IPv4 address(es); please make sure to check which firewall you are using beforehand:

IPv4 address: -

iptables -A INPUT -p icmp --icmp-type 8 -s 0/0 -d -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT
iptables -A OUTPUT -p icmp --icmp-type 0 -s -d 0/0 -m state --state ESTABLISHED,RELATED -j ACCEPT

Edit the file (/etc/ufw/before.rules) and add the following line:
-A ufw-before-input -p icmp --icmp-type echo-request –s -m state --state ESTABLISHED -j ACCEPT

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