Tweet
Please let me know what is Conntrack sessions in Linux?
-
Please let me know what is Conntrack sessions in Linux?
-
conntrack sessions:
Conntrack sessions are a component of the Linux kernel that keep track of incoming and outgoing connections to a host, commonly known as sessions. Conntrack is simply a table that keeps track of all connections (also known as sessions) that come into and exit from the host. Conntrack sessions are essential for protecting network security and assuring that packets are delivered to the proper location.
The firewall subsystem uses the conntrack table, a database that contains data about connection statuses, to carry out packet filtering and network address translation.
Maintaining a reasonable number of conntrack sessions is important. If the number of conntrack sessions becomes too high, a server can suffer performance issues, as well as negatively impact other servers on the node.
Conntrack sessions are essential for protecting network security and guaranteeing proper packet routing. They are made to keep track of TCP connections even after they have been closed, however, they do not work with UDP or ICMP. Conntrack sessions, in general, are an important part of the Linux kernel that supports correct packet routing and network security.
Comment