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.
How It Works. TCP and IP are the two major protocols that keep the internet running smoothly. TCP manages data transfer while IP directs traffic to internet addresses. FTP is an underling of TCP and shuttles files back and forth between FTP server and FTP client. Because FTP requires that two ports be open--the server's and the client's--it facilitates the exchange of large files of information.