tcp_wrapper は、TCP/IP プロトコルにおける、アクセス制限と監視などを行うツールです。
tcp_wrapper 7.2 (1998/10/10現在の最新版は7.6、現在評価中)
ftp://info.cert.org/pub/tools/tcp_wrappers/
unix> cd /usr/local/src/ unix> zcat ../pub/tcp_wrappers_7.2.tar.gz | tar -xvfo - unix> cd tcp_wrappers_7.2 unix> patch -p2 < ../../pub/tcp_wrapper.patch unix> make sysv4 unix> cp tcpd tcpdmatch try-from safe_finger tcpdchk /usr/local/sbin/. unix> cp tcpd.8 /usr/local/man/man8/. unix> cp hosts_access.3 /usr/local/man/man3/. unix> cp hosts_access.5 hosts_options.5 /usr/local/man/man5/.
unix> vi /etc/inetd.conf ftp stream tcp nowait root /usr/local/sbin/tcpd in.ftpd telnet stream tcp nowait root /usr/local/sbin/tcpd in.telnetd pop3 stream tcp nowait root /usr/local/sbin/tcpd popper unix> vi /etc/hosts.allow # for ash ALL: localhost ALL: .ash.jp ALL: 10.0.1. # for all japan in.telnetd: .jp in.pop3d: .jp wu.ftpd: .jp unix> vi /etc/hosts.deny ALL : ALL