07-30-2007
Opening ports
Hi guys,
I need to open ports on my AIX machine. The only way I know is to use service name to disable or enable ports which are used by the services. I found in /etc/services that the ports are unidentified. Btw, I want to open port number 11576 and 11577. Need help on this one. Thanks!
Last edited by raskita; 07-30-2007 at 06:17 AM..
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LEARN ABOUT OPENDARWIN
mach_init
MACH_INIT(8) BSD System Manager's Manual MACH_INIT(8)
NAME
mach_init -- Mach service naming (bootstrap) daemon
SYNOPSIS
mach_init [-D] [-d] [-F] [-r name-in-existing-server]
DESCRIPTION
mach_init is a daemon that maintains various mappings between service names and the Mach ports that provide access to those services.
Clients of mach_init can register and lookup services, create new mapping subsets, and associate services with declared servers. The
mach_init daemon will also be responsible for launching (and/or re-launching) those service providing servers when attempts to use one or
more of the associated services is detected.
The options are as follows:
-D When the -D option is specified, mach_init starts in normal (non-debug) mode. Logging is minimal (only security-related and process
launch failures are logged). Core dumps are disabled for launched servers. This is the default.
-d When the -d option is specified, mach_init starts in debug mode. Logging is extensive. Core dumps will be taken for any launched
servers that crash.
-F When the -F option is specified, mach_init forks during initialization so that it doesn't have to be put in the background manually
by the caller.
-r Using the -r option tells mach_init to register itself in a previously running copy of mach_init under the service name
name-in-existing-server. This is most useful when debugging new instances of mach_init itself, but can also be used for robustness or
to allow the subsequent mach_init processes to run as a non-root user. As mach_init is often used to launch servers, this could be
more secure. However, mach_init will not allow a server declaration to specify a user id different than that of the requesting
client (unless the client is running as root). So it shouldn't be required for a secure configuration.
Access to mach_init is provided through the bootstrap series of RPC APIs over service ports published by mach_init itself. Each Mach task has
an assigned bootstrap port retrieved via task_get_bootstrap_port(). These bootstrap port registrations are inherited across fork().
The service registrations are grouped into subsets, providing a level of security. Only processes with access to the subset's bootstrap port
will be able to register/lookup Mach ports within that subset. Lookups from within a subset will search the subset first, then move on to
its parent, and then its grand-parent, etc... until a string name match is found or the top of the bootstrap tree is reached. Subsets are
sometimes associated with login sessions to protect session-specific ports from being exposed outside the session.
The first instance of mach_init is responsible for launching the traditional BSD process control initialization daemon (/sbin/init).
SAMPLE USAGE
mach_init -d -r com.company.bootstrap
mach_init will start in debug mode, and register itself in an already running instance of mach_init under the service name com.company.boot-
strap.
NOTE
Sending a SIGHUP to a running mach_init will toggle debug mode.
SEE ALSO
init(8)
Mac OS X March 20, 2002 Mac OS X