What is conntrack and how can I check how many sessions I am using?

Conntrack is a table that stores information about all connections to/from a VPS. Here is a good explanation on how it works: http://www.rigacci.org/wiki/lib/exe/fetch.php/doc/appunti/linux/sa/iptables/conntrack.html

A normal Linux OS has a maximum of 65536 conntrack sessions by default, these sessions all require memory which is used by the host node and not by the VPS so setting this limit to high can impact the whole node and allow users to use more RAM than their VPS has allocated by eating up the host's RAM. Any VPS that uses over 20000 conntrack sessions will automatically be suspended by our automated system.

A typical VPS should never use more than 10000 sessions at any given time although we do have some busy NTP servers that peak at 20000 once in a while. To check your conntrack sessions, run the following command in your VPS: cat /proc/net/nf_conntrack
  • 24 Users Found This Useful
Was this answer helpful?

Related Articles

Do you offer DDOS protection for your cPanel services?

No we do not. Any DDOS attacks against any shared cPanel plan will result in either suspension or...

What are the IPv6 network settings?

TampaGateway: 2602:fff6:f:1::1Netmask: 48 DenverGateway: 2602:fff6:d:1::1Netmask: 48

Do you provide a money back guarantee?

Indeed we do! If you're unhappy with our service for any reason during the first 30 days, we can...

How do I change my cPanel account's domain?

Unfortunately cPanel does not allow clients to change their own domain name so please open a...

What are the advantages/disadvantages of PPTP?

Pros   Extremely easy to setup on all standard Operating Systems and devices (Windows,...

Powered by WHMCompleteSolution