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文档中显示取消了何种功能,以及显示如何设定新的防火墙功能。 <BR> <BR> <BR> #echo stream tcp nowait root internal <BR> #echo dgram udp wait root internal <BR> #discard stream tcp nowait root internal <BR> #discard dgram udp wait root internal <BR> #daytime stream tcp nowait root internal <BR> #daytime dgram udp wait root internal <BR> #chargen stream tcp nowait root internal <BR> #chargen dgram udp wait root internal <BR> # FTP firewall gateway --------FTP防火墙网关 <BR> ftp-gw stream tcp nowait.400 root /usr/local/etc/ftp-gw ftp-gw <BR> # Telnet firewall gateway------Telnet防火墙网关 <BR> telnet stream tcp nowait root /usr/local/etc/tn-gw /usr/local/etc/tn-gw <BR> # local telnet services------用户的telnet功能 <BR> telnet-a stream tcp nowait root /usr/local/etc/netacl in.telnetd <BR> # Gopher firewall gateway------Gopher防火墙网关 <BR> gopher stream tcp nowait.400 root /usr/local/etc/http-gw /usr/local/etc/http-gw <BR> # WWW firewall gateway------WWW防火墙网关 <BR> http stream tcp nowait.400 root /usr/local/etc/http-gw /usr/local/etc/http-gw <BR> # SSL firewall gateway------SSL防火墙网关 <BR> ssl-gw stream tcp nowait root /usr/local/etc/ssl-gw ssl-gw <BR> # NetNews firewall proxy (using plug-gw)------NetNews防火墙代理伺服器(使用plug-gw) <BR> nntp stream tcp nowait root /usr/local/etc/plug-gw plug-gw nntp <BR> #nntp stream tcp nowait root /usr/sbin/tcpd in.nntpd <BR> # SMTP (email) firewall gateway------SMTP(email)防火墙网关 <BR> #smtp stream tcp nowait root /usr/local/etc/smap smap <BR> # <BR> # Shell, login, exec and talk are BSD protocols------ Shell, login, exec and talk均属BSD协议 <BR> # <BR> #shell stream tcp nowait root /usr/sbin/tcpd in.rshd <BR> #login stream tcp nowait root /usr/sbin/tcpd in.rlogind <BR> #exec stream tcp nowait root /usr/sbin/tcpd in.rexecd <BR> #talk dgram udp wait root /usr/sbin/tcpd in.talkd <BR> #ntalk dgram udp wait root /usr/sbin/tcpd in.ntalkd <BR> #dtalk stream tcp waut nobody /usr/sbin/tcpd in.dtalkd <BR> # <BR> # Pop and imap mail services et al------Pop和imap mail功能 <BR> # <BR> #pop-2 stream tcp nowait root /usr/sbin/tcpd ipop2d <BR> #pop-3 stream tcp nowait root /usr/sbin/tcpd ipop3d <BR> #imap stream tcp nowait root /usr/sbin/tcpd imapd <BR> # <BR> # The Internet UUCP service------网际网路UUCP功能 <BR> # <BR> #uucp stream tcp nowait uucp /usr/sbin/tcpd /usr/lib/uucp/uucico -l <BR> # <BR> # Tftp service is provided primarily for booting. Most sites <BR> # run this only on machines acting as "boot servers." Do not uncomment <BR> # this unless you *need* it. ----- Tftp功能主要用于启动。一般只有作为"boot <BR> #伺服器"时才需要tftp。因此,不要取消注销(#)符号。 <BR> # <BR> #tftp dgram udp wait root /usr/sbin/tcpd in.tftpd <BR> #bootps dgram udp wait root /usr/sbin/tcpd bootpd <BR> # <BR> # Finger, systat and netstat give out user information which may be <BR> # valuable to potential "system crackers." Many sites choose to disable <BR> # some or all of these services to improve security.------ Finger, <BR> # systat and netstat会向骇客提供可贵的资料。许多网站取消一些或全部功能,以增安全。 <BR> # <BR> # cfinger is for GNU finger, which is currently not in use in RHS Linux <BR> # cfinger是GNU finger,目前在RHS Linux中并不使用。 <BR> # finger stream tcp nowait root /usr/sbin/tcpd in.fingerd <BR> #cfinger stream tcp nowait root /usr/sbin/tcpd in.cfingerd <BR> #systat stream tcp nowait guest /usr/sbin/tcpd /bin/ps -auwwx <BR> #netstat stream tcp nowait guest /usr/sbin/tcpd /bin/netstat -f inet <BR> # <BR> # Time service is used for clock syncronization.-----时间功能用于设定时间的同步。 <BR> # <BR> #time stream tcp nowait root /usr/sbin/tcpd in.timed <BR> #time dgram udp wait root /usr/sbin/tcpd in.timed <BR> # <BR> # Authentication-----查验用户身份 <BR> # <BR> auth stream tcp wait root /usr/sbin/tcpd in.identd -w -t120 <BR> authsrv stream tcp nowait root /usr/local/etc/authsrv authsrv <BR> # # End of inetd.conf-----inetd.cong设置档结束 <BR>7.4.3. /etc/services档 <BR> <BR>当用户连接到防火墙时,会接到一个已知的埠(小于1024)。例如,telnet接到埠23。 <BR>inetd deamon接到连接的动作,查看/etc/services上这些功能的名字。然後,它会启 <BR>动/etc/inetd.conf档中这个名字所指定的程式。 有时使用的功能并不在 <BR>/etc/services档中。这些功能可指定到任何想指定的埠。例如,管理员的telnet埠 <BR>(telnet-a)可设定到埠24,也可设定到埠2323,悉听尊便。如果管理员(指你本人) <BR>要直接连接到防火墙,则需telnet到埠24而非埠23。如按照下例设定netperm-table, <BR>则只能从保护的网路中的一个系统设定。 <BR> telnet-a 24/tcp <BR> ftp-gw 21/tcp # this named changed <BR> auth 113/tcp ident # User Verification <BR> ssl-gw 443/tcp <BR> <BR> ------------------------------------------------------------------------ <BR>防火墙和代理伺服器 - HOWTO : 安装TIS代理伺服器 <BR>Previous: IP filtering 的设置(IPFWADM) <BR>Next: SOCKS代理伺服器 <BR>-- <BR> <BR> 一壶浊酒喜相逢 <BR> 古今多少事均赋笑谈中 <BR> <BR> <BR> <BR>※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.200.37.100] <BR><CENTER><H1>BBS水木清华站∶精华区</H1></CENTER></BODY></HTML>
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