The nerve roots pass through these joints to go from the spinal cord to the arms, legs and other parts of the body. These joints also allow the spine to bend and twist, and they keep the back from slipping too far forward or twisting without limits.
A forward ftp proxy is used to allow internal LAN clients to connect to Internet ftp servers when connecting through a PF firewall. All control and data connection rules are made by the ftp-proxy daemon and inserted into PF using anchors.
An FTP server is similar to an HTTP server (that is, a Web server) in that you can communicate with it using an Internet protocol. However, an FTP server does not run Web pages; it only sends and receives files from remote computers. You can configure Internet Information Services (IIS) to function as an FTP server.