Solaris7 交流 -- 重新配置系统核心于1024的端口,即使需要这样的限制,却无法定义,如NFS的服务器端口2049,当然还有 一些其他定义的高于1024的私有端口。 在solairs2.5.1/2.6/7下使用如下方式,可以自定义最小的非私有端口 ndd –set /dev/tcp tcp_smallest_nonpriv_port 2050 这样以来,0-2049都被定义为私有端口。 在solaris 2.6/7下,还能使用另一个参数单独指定私有端口。 #ndd /dev/tcp tcp_extra_priv_ports 2049 4045 用来显示已经定义的扩展私有端口 #ndd –set /dev/tcp tcp_extra_priv_ports_add 6112 来增加新的私有端口定义。 使用 ndd –set /dev/tcp tcp_extra_priv_ports_del 来删除定义。 要注意的是,不要随便定义私有端口,因为有些非根权限的进程会使用这些端口。特别 是改变最小非私有端口这个参数,经常会引起问题。应仔细分析你的需求再用扩展私有 端口定义的方式单独增加。 15.tcp_max_buf 最大缓存字节数;这个参数控制了由setsockopt(3SOCKET)函数设置发送和接收BUFFER 大小; 默认值:1048576 范围为8192到1073741824 如果在一个高速的网络环境中创建TCP连接,增加该值来与网速相适应; 等等; 16、附件:设置脚本,来源于sun公司 #!/sbin/sh # # Copyright (c) 1999 by Sun Microsystems, Inc. # All rights reserved. # # $Id: nddconfig,v 1.2 1999/09/29 22:25:04 kaw Exp $ # # Copy this script to /etc/init.d and name it 'nddconfig'. Create a # hardlink to /etc/init.d/nddconfig in /etc/rc2.d named 'S70nddconfig'. # # Keith A. Watson # PATH=/usr/bin:/usr/sbin # # This file contain network related options settings. The settings # included here are considered safe in terms of security. Some settings # may not work in your environment. The comments provided for each # explain what effect the setting has. # # A '0' indicates false/off. # A '1' indicates true/on. # # # arp_cleanup_interval # # This option determines the period of time the Address Resolution # Protocol (ARP) cache maintains entries. ARP attacks may be effective # with the default interval. Shortening the timeout interval should # reduce the effectiveness of such an attack. # The default value is 300000 milliseconds (5 minutes). # ARP_CLEANUP_INTERVAL=60000 # # ip_forward_directed_broadcasts # # This option determines whether to forward broadcast packets directed # to a specific net or subnet, if that net or subnet is directly # connected to the machine. If the system is acting as a router, this # option can be exploited to generate a great deal of broadcast network # traffic. Turning this option off will help prevent broadcast traffic # attacks. # The default value is 1 (True). # IP_FORWARD_DIRECTED_BROADCASTS=0 # # ip_forward_src_routed # # This option determines whether to forward packets that are source 上一篇:Sun Solaris 用户手册 -- 三.系统安装 下一篇:Solaris7 交流 --- 进程管理、进程控制及cron处理 更多相关文章
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