̾??

faithd —

FAITH IPv6/v4 ?Ѵ??ǡ?????

????

faithd [-dp] [-f configfile] service [serverpath [serverargs]]

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faithd ?桼?ƥ????ƥ??? IPv6 ???? IPv4 ?ؤ? TCP ???졼??ǽ???󶡤??ޤ??? faithd ?? IPv4/v6 ?ǥ奢?륹???å??롼?????ǵ?ư???ʤ????Фʤ??ޤ?????

TCPv6 ?ȥ??ե??å??????Ĥ????ȡ? faithd ?Ϥ??? TCPv6 ?ȥ??ե??å??? TCPv4 ?˥??졼???ޤ??? ???졼???? TCPv4 ???ͥ????????ν????ϡ????? IPv6 ?????????? 4 ?????ƥåȤ??????ꤵ???ޤ??? ?㤨?С? faithd ?Ѥ? 3ffe:0501:4819:ffff:: ??ͽ?󤵤??Ƥ??ơ? TCPv6 ???????ɥ쥹?? 3ffe:0501:4819:ffff::0a01:0101 ?ʤ顢???Υȥ??ե??å??? IPv4 ?ν??? 10.1.1.1 ?˸????ƥ??졼?????ޤ???

faithd ?ˤ????Ѵ??????ӥ????Ѥ????ˤϡ? IPv4 ???ɥ쥹???ޥåפ??뤿???? IPv6 ???ɥ쥹?ץ??ե??å????? ͽ?󤷤Ƥ???ɬ?פ??????ޤ??? ?????ͥ??ϡ???????ͽ?󤷤? IPv6 ???ɥ쥹?ץ??ե??å????ؤ? ???٤Ƥ? TCP ???ͥ??????????? route(8) ???Ѥ??Ƶ??????󥿥ե????? faith(4) ?˥롼?ƥ??󥰤????褦?ˡ?Ŭ?ڤ˹??ۤ????Ƥ??ʤ????Фʤ??ޤ????? ?ޤ??? sysctl(8) ???Ѥ??? net.inet6.ip6.keepfaith ?? 1 ?????ꤷ?Ƥ????٤??Ǥ???

?롼???ϡ?ͽ?󤵤줿 IPv6 ???ɥ쥹?ץ??ե??å????Ԥ??Τ??٤Ƥ? TCP ?ȥ??ե??å??????ޤ????褦?? ???ꤷ?ʤ????Фʤ??ޤ??󡣤??Τ????ˤ? route(8) ?? sysctl(8) ?Υ??ޥ??ɤ????Ѥ??ޤ???

faithd ?桼?ƥ????ƥ??ϡ?̾?????饢?ɥ쥹?ؤ????̤??Ѵ???????ɬ?פȤ??? ?ۥ???̾???????̤? IPv6 ???ɥ쥹?ץ??ե??å????ز??褷?ޤ??? ?????Ϥʥ??󥹥ȡ????Ǥϡ? hosts(5) ?????Ѥ??Ƥ????????? ?絬?Ϥʥ??󥹥ȡ????Ǥϡ? ???̤ʥ??ɥ쥹?Ѵ??򥵥ݡ??Ȥ??? DNS ?????Ф?ͭ?ѤǤ??礦?? totd ?ȸƤФ????????? http://www.vermicelli.pasta.cs.uit.no/ipv6/software.html ????????ǽ?Ǥ??? ?Ѵ????줿 DNS ?쥳???ɤ????̤? DNS ???????Ť????ʤ??褦?????դ??Ƥ????????? ??????ͭ???Ǥ???

?ǡ??????⡼??

faithd ?????????ɥ??????ץ????????Ȥ??Ƶ?ư???????ȡ? faithd ?ϼ?ʬ???Ȥ??ǡ????󲽤??ޤ??? faithd ?桼?ƥ????ƥ??? TCPv6 ?Υݡ??? service ?? listen ???ޤ??? ?ݡ??? service ?ؤ? TCPv6 ?ȥ??ե??å??????դ????ȡ????ͥ????????????졼???ޤ???

faithd ?? TCP ?ݡ??? service ?? listen ?????Τǡ? inetd(8) ??¾??ɸ??Ū?ʻ??Ȥߤ??Ѥ??ơ????Υ롼?????? service ?ݡ??Ȥ??Ȥ??????????? TCP ?ǡ???????ư????뤳?ȤϤǤ??ޤ????? faithd ???Ф??? serverpath ?????ꤹ?뤳?Ȥǡ? ?롼?????ǥ????????ǡ??????????餻?뤳?Ȥ??Ǥ??ޤ??? ???????ɥ쥹???????????Υ??󥿡??ͥåȥ??ɥ쥹?Ǥ????С? faithd ?桼?ƥ????ƥ??? serverpath ?ˤ????ƥ????????ǡ?????????ư???ޤ??? ?????ʳ??ξ??硢 faithd ?? IPv4 TCP ?ؤ??Ѵ????Ԥ??ޤ??? ?????????ǡ??????ΰ????? serverargs ???Ѥ??ƻ??ꤹ?뤳?Ȥ??Ǥ??ޤ???

???Υ??ץ????󤬻??Ѳ?ǽ?Ǥ?:

-d: syslog(3) ???Ѥ??ƥǥХå??????????Ϥ??ޤ???
-f configfile: ?????????????Ѥ??????ե??????????ꤷ?ޤ??? ???Ҥ򻲾Ȥ??Ƥ?????????
-p: IPv4 TCP ???ͥ??????????ǽ??ν????????˥??졼?????ݡ? faithd ?ϥ??????ݡ??ȤȤ????ø? TCP ?ݡ??Ȥ????Ѥ??ޤ??? ftp(1) ?????졼?????ݤ? ?ܥ??ץ??????????פǤ??? ???Τ????????̤ʥץ??????ॳ???ɤ??ޤޤ??Ƥ??ޤ???

faithd ?桼?ƥ????ƥ????̾??? TCP ?ǡ??????Ӱ賰 TCP ?ǡ????????졼???ޤ??? TCP half close ?򥨥ߥ??졼?Ȥ??뤳?Ȥ???ǽ?Ǥ??? faithd ?桼?ƥ????ƥ??? ftp(1) ???Ѥ????????ץ??ȥ??????Ф??ơ????̤ʥ??ݡ??Ȥ??Ԥ??ޤ??? FTP ?ץ??ȥ?????ž???????ݤϡ? faithd ?ϡ? PORT/LPRT/EPRT ???ޥ??ɤ????? PASV/LPSV/EPSV ???ޥ??ɤˤ??????ͥåȥ?????٥륢?ɥ쥹???Ѵ????ޤ???

?????ƥ??֤Ǥʤ????å??????? 30 ʬ?????Ǥ??ޤ??? ?????ϡ??Ȥ??ʤ??ʤä????å??????Τ????ǥ꥽?????????񤵤????Τ? ?ɤ??????Ǥ??? ?????ӥ??ˤ??äƤϤ??ε?ǽ??Ŭ?ڤǤʤ????⤷???ޤ????? (???ε?ǽ?򥳥??ե??????졼????????ǽ?ˤ??٤??Ǥ??礦???)

inetd ?⡼??

faithd ?? inetd(8) ???鵯ư???????ȡ? faithd ?桼?ƥ????ƥ???ɸ?????Ϥ????Ϥ????륳?ͥ????????򰷤??ޤ??? ???ͥ????????ν???????ͽ?󤷤? IPv6 ???ɥ쥹?ץ??ե??å??????ϰ????ξ??硢 faithd ?ϥ??ͥ????????????졼???ޤ??? ?????ʳ??ξ??硢 faithd ?ϥ????ӥ????б????? telnetd(8) ?Τ褦?ʥǡ?????????ư???? inetd(8) ?????Ϥ????륳?ޥ??ɰ????????Ѥ??ޤ???

faithd ?ϡ??????????? TCP ?ݡ????ֹ??򸵤?ư???⡼?ɤ????ꤷ?? ɬ?פʻ?/??ǽ?ʻ??ˤ????̤ʥץ??ȥ?????????ͭ???ˤ??ޤ??? ?㤨?С? faithd ?? FTP ?ݡ??Ⱦ??? inetd(8) ???鵯ư???????ȡ??????? FTP ???졼?Ȥ???ư??ޤ???

????ư???⡼?ɤǤϡ? inetd(8) ???? faithd ?Ѥ????̤ʥ??ݡ??Ȥ?ɬ?פȤ??ޤ???

????????????

???դ??륢?????????ɤ????ᡢ faithd ??ñ???ʥ??ɥ쥹?١????Υ????????????????????Ƥ??ޤ??? /etc/faithd.conf (?ޤ??? -f ?ǻ??ꤷ?? configfile) ?ǡ? faithd ??˾?ޤʤ??ȥ??ե??å??????Ѥ??ɤ??ޤ??? faithd.conf ?ϡ????ν񼰤Υǥ??쥯?ƥ??֤??ޤߤޤ?:

src/slen deny dst/dlen
?䤤???碌?λ??????ɥ쥹?? src/slen ?˹??פ????????ǡ??Ѵ????ν??????ɥ쥹?? dst/dlen ?˹??פ??????硢??³?????ݤ??ޤ???
src/slen permit dst/dlen
?䤤???碌?λ??????ɥ쥹?? src/slen ?˹??פ????????ǡ??Ѵ????ν??????ɥ쥹?? dst/dlen ?˹??פ??????硢??³?????Ĥ??ޤ???

???????Υǥ??쥯?ƥ??֤Ͻ??֤?ɾ?????졢 ?ǽ??˹??פ??륨???ȥ꤬???̤??????ޤ??? ???פ??ʤ??? (???줬?롼?륻?åȤκǸ??Ǥ???????) ?ȥ??ե??å??ϵ??ݤ????ޤ???

inetd ?⡼?ɤǤϡ? inetd(8) ?Υ??????????浡ǽ?ǥȥ??ե??å????ե??륿??ǽ?Ǥ???

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?????????? faithd ?桼?ƥ????ƥ??? EXIT_SUCCESS (0) ?ǽ?λ???????顼???????????? EXIT_FAILURE (1) ?ǽ?λ???ޤ???

??????

faithd ????ư???????ˡ? faith(4) ???󥿥ե???????Ŭ?ڤ????ꤷ?Ƥ???ɬ?פ??????ޤ???

# sysctl net.inet6.ip6.accept_rtadv=0
# sysctl net.inet6.ip6.forwarding=1
# sysctl net.inet6.ip6.keepfaith=1
# ifconfig faith0 up
# route add -inet6 3ffe:501:4819:ffff:: -prefixlen 96 ::1
# route change -inet6 3ffe:501:4819:ffff:: -prefixlen 96 -ifp faith0

?ǡ??????⡼?ɤΥ????ץ?

telnet ?????ӥ????Ѵ??????????ƥ????????? telnet ?????ӥ????󶡤??ʤ??????ϡ? ???Τ褦?? faithd ????ư???ޤ?:

# faithd telnet

?⤷ /usr/libexec/telnetd ?ˤ??? telnetd(8) ?ˤ??????????? telnet ?????ӥ????󶡤??????????ϡ? ???Υ??ޥ??ɥ饤???????Ѥ??ޤ?:

# faithd telnet /usr/libexec/telnetd telnetd

?????????ǡ????????ɲäΰ??????Ϥ???????????:

# faithd ftp /usr/libexec/ftpd ftpd -l

¾?λ??????Ǥ??? ?????ӥ????????ݡ????ϰϤ??????å??????????ˤ? -p ??ɬ?פ??⤷???ޤ?????

# faithd ssh
# faithd telnet /usr/libexec/telnetd telnetd

inetd ?⡼?ɤΥ????ץ?

inetd.conf(5) ?˼??ιԤ??ɲä??ޤ??? ??ʸ?ϥ??ڥ졼?ƥ??󥰥????ƥ??ˤ??ä??͡??Ǥ??礦??

telnet  stream  tcp6/faith  nowait  root  faithd  telnetd
ftp     stream  tcp6/faith  nowait  root  faithd  ftpd -l
ssh     stream  tcp6/faith  nowait  root  faithd  /usr/sbin/sshd -i

inetd(8) ?ϡ?listen ???륽???åȤ򥪡??ץ󤷡? ?????ͥ??? TCP ???졼???ݡ??Ȥ?ͭ???????ޤ??? ???ͥ????????????夹???ȡ? faithd ?? inetd(8) ???鵯ư?????ޤ??? ???ͥ????????ν???????ͽ?󤷤? IPv6 ???ɥ쥹?ץ??ե??å??????ϰ????ξ??硢 faithd ?ϥ??ͥ????????????졼???ޤ??? ?????ʳ??ξ??硢 faithd ?桼?ƥ????ƥ??ϥ????ӥ????б????? telnetd(8) ?Τ褦?ʥǡ?????????ư???ޤ???

????????????????

?ʲ???ñ???? faithd.conf ?????򼨤??ޤ???

# 3ffe:501:ffff::/48 ?????Τ??٤Ƥ??Ѵ????λ??Ѥ???????
# ???? IPv4 ?ν???????³?????ޤ?:
# - 10.0.0.0/8 ?? 127.0.0.0/8 ?ʳ??Τ??٤?
# ¾????³?ϵ????ޤ?????
#
3ffe:501:ffff::/48 deny 10.0.0.0/8
3ffe:501:ffff::/48 deny 127.0.0.0/8
3ffe:501:ffff::/48 permit 0.0.0.0/0

??Ϣ????

faith(4), route(8), sysctl(8) Jun-ichiro itojun Hagino and Kazu Yamamoto, An IPv6-to-IPv4 transport relay translator, RFC3142, June 2001, ftp://ftp.isi.edu/in-notes/rfc3142.txt.

????

faithd ?桼?ƥ????ƥ??? WIDE Hydrangea IPv6 ?ץ??ȥ??륹???å????åȤ? ???????о줷?ޤ?????

KAME ?ץ????????? (http://www.kame.net/) ?????å??? ???Ť? IPv6, IPsec ???ݡ??Ȥϡ? FreeBSD 4.0 ?ǽ????????礵???ޤ?????

?????????ƥ??ιͻ?

faithd ??????¾?? TCP ???졼?????ӥ? ?ǥ??졼???줿???ͥ??????????Ф??? IP ???ɥ쥹?١?????ǧ?ڤ??Ѥ????Τ????Ѵ????Ǥ???

faithd.conf ?⤷???? IPv6 ?ѥ??åȥե??륿?????Ѥ??? faithd ?ؤΥ??????????¤??Ԥ????Ȥ򡢴????Ԥؤ????ᤷ?ޤ??? ?????? faithd ?򰭰դ?????ã?????ɸ椹?뤳?ȤǤ??ꡢ ?????ӥ?/?Х??????????ޤ??ʤ??褦?ˤ??뤳?Ȥ???̣???ޤ??? IPv6 ?ν??????ɥ쥹?ˤĤ??Ƥϡ? route(8) ???Ѥ??ơ? faith(4) ???ؤ???ϩ?????ȥ??????տ??????ꤹ?뤳?Ȥǡ????²?ǽ?Ǥ??? IPv6 ?λ??????ɥ쥹?ˤĤ??Ƥϡ? ?ѥ??åȥե??륿?ǥե??륿????ɬ?פ??????ޤ??? ??Ϣ???? ?????󤷤?ʸ???ˡ??ܷ??˴ؤ??빹?ʤ??????????Ҥ????Ƥ??ޤ???