HOB Gateway NBIPGW02

The NBIPGW02 gateway runs under Sun Solaris. The NBIPGW02 gateway redirects IP packets from a client to a server. It can be used if a direct connection between client and server is not possible or not desired. You can also use use NBIPGW02 in the "demilitarized zone."

The NBIPGW02 gateway runs as a 32-bit program. It runs only on Sun Ultra 64-bit processors and uses XTI. 

The NBIPGW02 gateway is started as a process in a Unix shell. For this reason, when there are a large number of connections, the process must be able to open a large number of sockets. For Solaris, the default configuration pre-defines only 256 file descriptors.

It is possible to check the number file descriptors with the command "ulimit -a". The value is returned and displayed under "nofiles(descriptors)". Before starting the redirector, the user has to set the number of descriptors based on the number of connections required. This is done using the command "ulimit -n xxxx".

Important! Please note that the file descriptors can only be increased up to a "hard" limit. The system administrator must set this limit system-wide in the file "/etc/system" using the following values:

set rlim_fd_max=32768 # system-wide hard limit for file descriptors (max. 65535)

set rlim_fd_cur=1024 # system-wide soft limit

Attention: Setting "set rlim_fd_cur" to a value higher than 1024 can lead to problems, e.g., the license daemon can no longer be started. For this reason, before starting the redirector, increase the number of file descriptors, e.g., using the command "ulimit -n 16000".

NBIPGW02 reads its configuration parameters from an .ini-file. The .ini-file can be edited with any usual ASCII-editor. Please note that this .ini file must observe the conventions for .ini files under Windows NT.

When NBIPGW02 is started, the first parameter specifies the name of the .ini-file.

Example:

NBIPGW02 xyz.ini

The .ini file can contain several sections whose name start with GATE and specify the parameters of the connections to the clients and to the servers.

Each section contains the following parameters: