man pages section 4: File Formats

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Updated: July 2014



ncaport.conf - ncaport configuration file




The ncaport.conf file is used to configure the IP addresses and ports that the Solaris Network Cache and Acceleration (NCA) kernel module services. The file contains two fields, key and value, in the format of ncaport=ipaddress/ port. IPv4 addresses must be in the dot notation d.d.d.d. IPv6 addresses must be in one of the three conventional forms (see inet_pton(3SOCKET)). If an asterisk (*) is used for an IP address, it is interpreted as INADDR_ANY, which matches any IP address.

A web server uses the environment variable LD_PRELOAD and the ncaport.conf configuration file to convert an AF_INET socket to an AF_NCA socket. LD_PRELOAD enables the NCA socket utility library to be loaded before See the ncad_addr(4) for details. When a web server issues the bind(3SOCKET) system call, it is intercepted by the interposition library If the bind address is in the ncaport.conf file, the AF_INET socket is converted to a AF_NCA socket.


Example 1 Sample ncaport.conf File

The following is a sample ncaport.conf file:

# NCA Kernel Module Port Configuration File

See also

bind(3SOCKET), inet_pton (3SOCKET), ncad_addr(4), attributes (5), nca(7d)


For those web servers that use AF_NCA sockets, the NCA port configuration described here has no effect.

NCA does not currently support IPv6. Any IPv6 addresses in the file ncaport.conf are ignored.