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Full Discussion: closing open ports
Special Forums Cybersecurity closing open ports Post 7321 by Neo on Monday 24th of September 2001 10:45:51 PM
Old 09-24-2001
Re: closing open ports
If configured only for routing:


21/tcp ftp (COMMENT OUT IN INETD.CONF)
22/tcp ssh (KEEP THIS FOR REMOTE MGT)
23/tcp telnet (COMMENT OUT IN INETD.CONF)
25/tcp smtp (COMMENT OUT IN START UP SCRIPTS)
37/tcp time (YOU MAY WANT THIS FOR REMOTE MGT)
80/tcp http (YOU MAY WANT THIS FOR REMOTE MGT, OTHERWISE COMMENT OUT)
113/tcp auth (KEEP FOR OTHER DAEMONS TO USE)
515/tcp printer (COMMENT OUT IN STARTUP SCRIPTS)
587/tcp submission (COMMENT OUT IN STARTUP SCRIPTS)
1024/tcp kdm (COMMENT OUT IN STARTUP SCRIPTS)
6000/tcp x11 (COMMENT OUT IN START UP SCRIPTS)


Don't forget to enable route filtering and use FW (packet filtering) tools.
 

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LEARN ABOUT OPENSOLARIS

tcp

tcp.h(3HEAD)							      Headers							      tcp.h(3HEAD)

NAME

       tcp.h, tcp - definitions for the Internet Transmission Control Protocol (TCP)

SYNOPSIS

       #include <netinet/tcp.h>

DESCRIPTION

       The <netinet/tcp.h> header defines the following macro for use as a socket option at the IPPROTO_TCP level:

       TCP_NODELAY    Avoid coalescing of small segments.

       The macro is defined in the header. The implementation need not allow the value of the option to be set with setsockopt() or retrieved with
       getsockopt().

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getsockopt(3XNET), socket.h(3HEAD), attributes(5), standards(5)

SunOS 5.11							    10 Sep 2004 						      tcp.h(3HEAD)
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