Adding an additional IP address on a Windows machine can be confusing at first, but is a very straightforward process. Before you begin:**Please note: You must be logged in as an Administrator or as a user with administrative privileges.**Make sure the IPs you wish to add are enabled in your myCP. You can check this […]
Category: Troubleshooting
How to Bind Additional IP Addresses to a single Network Interface Card (NIC) RedHat distributions of Linux (CentOS, Fedora, RHEL)
All dedicated and virtual private servers come with 2 IP addresses by default. The main IP address has already been assigned to your server to allow you access for administration and management. You can use your secondary IP address to run a specific service separate from your main IP, such as SMTP or an SSL […]
How do I add an iptables rule?
Adding a rule to iptables Ever since the early days of the internet, securing a server against outside threats from malicious persons has been a necessity. As time has gone by, the variety and complexity of the methods used to do so has increased exponentially, and solutions range from free software to server clusters […]
How do I perform a traceroute?
From time to time internet users will find that their connection to a given site or the internet in general seems to slow to a crawl or become altogether unresponsive. However, even when the problem seems to be limited to a single website or server, the culprit is not always the server on the other […]
Why am I experiencing high latency? Why am I experiencing packet loss?
The most common cause of high latency and packet loss events on our network is a saturated access port. For example if your server is connected to a 100Mbps access port (standard port speed) and the entirety of your bandwidth is utilized (approximately 12.5MB/sec) you will experience degraded network connectivity. With a 100Mbps access port […]
Why do I get a “Host Name may not be fully propagated yet. Please try again later” when I try to add a reverse DNS entry?
We require that a matching “forward resolving” A record be configured prior to configuring a reverse DNS entry or “PTR” record. For example, if you own the IP address 192.168.44.123 and want to configure the reverse DNS address of ‘myserver.example.com’ an “A” record pointing ‘myserver.example.com’ to ‘192.168.44.123’ must first exist before the reverse DNS address […]
Why does traceroute show *’s when it reaches Superb’s network?
For security purposes we “firewall” off UDP ping (traceroute) responses from certain pieces of our core networking equipment. As such, traceroutes into your server from certain networks may show unexpected results. For example, the following traceroute shows a successful trace into Superb’s network from the University of Maryland (umd.edu): 1 Vlan5.css-nts-r1.net.umd.edu (128.8.5.60) 0.539 ms 0.520 […]
Why doesn’t my additional IP work?
The most common cause of an additional IP address failing to operate properly is that the IP address is marked as “disabled” in your myCP control panel. To enable your additional IP address(es) please visit your myCP control panel and click the link to “Enable / Disable IPs” in the left-hand column. Please note that […]
