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|00001c70| 74 70 64 20 20 20 20 69 | 6e 2e 66 74 70 64 20 2d |tpd i|n.ftpd -|
|00001c80| 6c 0a 74 65 6c 6e 65 74 | 20 20 20 20 73 74 72 65 |l.telnet| stre|
|00001c90| 61 6d 20 74 63 70 20 6e | 6f 77 61 69 74 20 72 6f |am tcp n|owait ro|
|00001ca0| 6f 74 20 20 20 2f 75 73 | 72 2f 73 62 69 6e 2f 74 |ot /us|r/sbin/t|
|00001cb0| 65 6c 6e 65 74 64 20 69 | 6e 2e 74 65 6c 6e 65 74 |elnetd i|n.telnet|
|00001cc0| 64 20 2d 62 2f 65 74 63 | 2f 69 73 73 75 65 0a 23 |d -b/etc|/issue.#|
|00001cd0| 66 69 6e 67 65 72 20 20 | 20 20 73 74 72 65 61 6d |finger | stream|
|00001ce0| 20 74 63 70 20 6e 6f 77 | 61 69 74 20 62 69 6e 20 | tcp now|ait bin |
|00001cf0| 20 20 20 2f 75 73 72 2f | 73 62 69 6e 2f 66 69 6e | /usr/|sbin/fin|
|00001d00| 67 65 72 64 20 69 6e 2e | 66 69 6e 67 65 72 64 0a |gerd in.|fingerd.|
|00001d10| 23 74 66 74 70 20 20 20 | 20 20 20 64 67 72 61 6d |#tftp | dgram|
|00001d20| 20 20 75 64 70 20 77 61 | 69 74 20 20 20 6e 6f 62 | udp wa|it nob|
|00001d30| 6f 64 79 20 2f 75 73 72 | 2f 73 62 69 6e 2f 74 66 |ody /usr|/sbin/tf|
|00001d40| 74 70 64 20 20 20 69 6e | 2e 74 66 74 70 64 0a 23 |tpd in|.tftpd.#|
|00001d50| 74 66 74 70 20 20 20 20 | 20 20 64 67 72 61 6d 20 |tftp | dgram |
|00001d60| 20 75 64 70 20 77 61 69 | 74 20 20 20 6e 6f 62 6f | udp wai|t nobo|
|00001d70| 64 79 20 2f 75 73 72 2f | 73 62 69 6e 2f 74 66 74 |dy /usr/|sbin/tft|
|00001d80| 70 64 20 20 20 69 6e 2e | 74 66 74 70 64 20 2f 62 |pd in.|tftpd /b|
|00001d90| 6f 6f 74 2f 64 69 73 6b | 6c 65 73 73 0a 6c 6f 67 |oot/disk|less.log|
|00001da0| 69 6e 20 20 20 20 20 73 | 74 72 65 61 6d 20 74 63 |in s|tream tc|
|00001db0| 70 20 6e 6f 77 61 69 74 | 20 72 6f 6f 74 20 20 20 |p nowait| root |
|00001dc0| 2f 75 73 72 2f 73 62 69 | 6e 2f 72 6c 6f 67 69 6e |/usr/sbi|n/rlogin|
|00001dd0| 64 20 69 6e 2e 72 6c 6f | 67 69 6e 64 0a 73 68 65 |d in.rlo|gind.she|
|00001de0| 6c 6c 20 20 20 20 20 73 | 74 72 65 61 6d 20 74 63 |ll s|tream tc|
|00001df0| 70 20 6e 6f 77 61 69 74 | 20 72 6f 6f 74 20 20 20 |p nowait| root |
|00001e00| 2f 75 73 72 2f 73 62 69 | 6e 2f 72 73 68 64 20 20 |/usr/sbi|n/rshd |
|00001e10| 20 20 69 6e 2e 72 73 68 | 64 0a 65 78 65 63 20 20 | in.rsh|d.exec |
|00001e20| 20 20 20 20 73 74 72 65 | 61 6d 20 74 63 70 20 6e | stre|am tcp n|
|00001e30| 6f 77 61 69 74 20 72 6f | 6f 74 20 20 20 2f 75 73 |owait ro|ot /us|
|00001e40| 72 2f 73 62 69 6e 2f 72 | 65 78 65 63 64 20 20 69 |r/sbin/r|execd i|
|00001e50| 6e 2e 72 65 78 65 63 64 | 0a 23 0a 23 20 20 20 20 |n.rexecd|.#.# |
|00001e60| 20 20 20 69 6e 65 74 64 | 20 69 6e 74 65 72 6e 61 | inetd| interna|
|00001e70| 6c 20 73 65 72 76 69 63 | 65 73 0a 23 0a 64 61 79 |l servic|es.#.day|
|00001e80| 74 69 6d 65 20 20 20 73 | 74 72 65 61 6d 20 74 63 |time s|tream tc|
|00001e90| 70 20 6e 6f 77 61 69 74 | 20 72 6f 6f 74 20 69 6e |p nowait| root in|
|00001ea0| 74 65 72 6e 61 6c 0a 64 | 61 79 74 69 6d 65 20 20 |ternal.d|aytime |
|00001eb0| 20 64 67 72 61 6d 20 20 | 75 64 70 20 6e 6f 77 61 | dgram |udp nowa|
|00001ec0| 69 74 20 72 6f 6f 74 20 | 69 6e 74 65 72 6e 61 6c |it root |internal|
|00001ed0| 0a 74 69 6d 65 20 20 20 | 20 20 20 73 74 72 65 61 |.time | strea|
|00001ee0| 6d 20 74 63 70 20 6e 6f | 77 61 69 74 20 72 6f 6f |m tcp no|wait roo|
|00001ef0| 74 20 69 6e 74 65 72 6e | 61 6c 0a 74 69 6d 65 20 |t intern|al.time |
|00001f00| 20 20 20 20 20 64 67 72 | 61 6d 20 20 75 64 70 20 | dgr|am udp |
|00001f10| 6e 6f 77 61 69 74 20 72 | 6f 6f 74 20 69 6e 74 65 |nowait r|oot inte|
|00001f20| 72 6e 61 6c 0a 65 63 68 | 6f 20 20 20 20 20 20 73 |rnal.ech|o s|
|00001f30| 74 72 65 61 6d 20 74 63 | 70 20 6e 6f 77 61 69 74 |tream tc|p nowait|
|00001f40| 20 72 6f 6f 74 20 69 6e | 74 65 72 6e 61 6c 0a 65 | root in|ternal.e|
|00001f50| 63 68 6f 20 20 20 20 20 | 20 64 67 72 61 6d 20 20 |cho | dgram |
|00001f60| 75 64 70 20 6e 6f 77 61 | 69 74 20 72 6f 6f 74 20 |udp nowa|it root |
|00001f70| 69 6e 74 65 72 6e 61 6c | 0a 64 69 73 63 61 72 64 |internal|.discard|
|00001f80| 20 20 20 73 74 72 65 61 | 6d 20 74 63 70 20 6e 6f | strea|m tcp no|
|00001f90| 77 61 69 74 20 72 6f 6f | 74 20 69 6e 74 65 72 6e |wait roo|t intern|
|00001fa0| 61 6c 0a 64 69 73 63 61 | 72 64 20 20 20 64 67 72 |al.disca|rd dgr|
|00001fb0| 61 6d 20 20 75 64 70 20 | 6e 6f 77 61 69 74 20 72 |am udp |nowait r|
|00001fc0| 6f 6f 74 20 69 6e 74 65 | 72 6e 61 6c 0a 63 68 61 |oot inte|rnal.cha|
|00001fd0| 72 67 65 6e 20 20 20 73 | 74 72 65 61 6d 20 74 63 |rgen s|tream tc|
|00001fe0| 70 20 6e 6f 77 61 69 74 | 20 72 6f 6f 74 20 69 6e |p nowait| root in|
|00001ff0| 74 65 72 6e 61 6c 0a 63 | 68 61 72 67 65 6e 20 20 |ternal.c|hargen |
|00002000| 20 64 67 72 61 6d 20 20 | 75 64 70 20 6e 6f 77 61 | dgram |udp nowa|
|00002010| 69 74 20 72 6f 6f 74 20 | 69 6e 74 65 72 6e 61 6c |it root |internal|
|00002020| 0a 5c 65 6e 64 7b 76 65 | 72 62 61 74 69 6d 7d 0a |.\end{ve|rbatim}.|
|00002030| 5c 65 6e 64 7b 74 73 63 | 72 65 65 6e 7d 0a 20 5c |\end{tsc|reen}. \|
|00002040| 63 61 70 74 69 6f 6e 7b | 0a 20 20 5c 6c 61 62 65 |caption{|. \labe|
|00002050| 6c 7b 61 70 70 6c 2e 66 | 69 67 2e 69 6e 65 74 64 |l{appl.f|ig.inetd|
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|000020a0| 0a 5c 69 6e 64 65 78 7b | 73 65 63 75 72 69 74 79 |.\index{|security|
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|000021e0| 2e 0a 0a 0a 5c 69 6e 64 | 65 78 7b 54 46 54 50 7c |....\ind|ex{TFTP||
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|00002230| 65 72 20 50 72 6f 74 6f | 63 6f 6c 7d 0a 5c 69 6e |er Proto|col}.\in|
|00002240| 64 65 78 7b 74 66 74 70 | 40 5c 70 72 6f 67 7b 74 |dex{tftp|@\prog{t|
|00002250| 66 74 70 7d 7d 0a 54 68 | 65 20 5c 70 72 6f 67 7b |ftp}}.Th|e \prog{|
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|00002560| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00002570| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00002580| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00002590| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 0a 5c 6c |%%%%%%%%|%%%%%.\l|
|000025a0| 61 62 65 6c 7b 61 70 70 | 6c 2e 74 63 70 64 7d 0a |abel{app|l.tcpd}.|
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|000025c0| 54 43 50 20 73 65 72 76 | 65 72 73 7d 0a 5c 69 6e |TCP serv|ers}.\in|
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|000025f0| 0a 5c 69 6e 64 65 78 7b | 61 63 63 65 73 73 21 72 |.\index{|access!r|
|00002600| 65 73 74 72 69 63 74 69 | 6e 67 7d 0a 5c 69 6e 64 |estricti|ng}.\ind|
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|00002660| 63 70 64 40 5c 70 72 6f | 67 7b 74 63 70 64 7d 7c |cpd@\pro|g{tcpd}||
|00002670| 28 7d 0a 5c 69 6e 64 65 | 78 7b 73 65 72 76 65 72 |(}.\inde|x{server|
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|000027f0| 6e 64 0a 69 6e 73 65 63 | 75 72 65 20 68 6f 73 74 |nd.insec|ure host|
|00002800| 73 20 77 68 6f 73 65 20 | 72 65 71 75 65 73 74 73 |s whose |requests|
|00002810| 20 73 68 6f 75 6c 64 20 | 62 65 20 72 65 6a 65 63 | should |be rejec|
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|000028b0| 60 74 72 75 73 74 65 64 | 20 68 6f 73 74 73 27 27 |`trusted| hosts''|
|000028c0| 20 6f 6e 6c 79 2c 0a 77 | 68 69 63 68 20 69 73 20 | only,.w|hich is |
|000028d0| 69 6d 70 6f 73 73 69 62 | 6c 65 20 77 69 74 68 20 |impossib|le with |
|000028e0| 74 68 65 20 75 73 75 61 | 6c 20 73 65 74 75 70 2c |the usua|l setup,|
|000028f0| 20 77 68 65 72 65 20 5c | 70 72 6f 67 7b 69 6e 65 | where \|prog{ine|
|00002900| 74 64 7d 20 65 69 74 68 | 65 72 0a 70 72 6f 76 69 |td} eith|er.provi|
|00002910| 64 65 73 20 74 68 69 73 | 20 73 65 72 76 69 63 65 |des this| service|
|00002920| 20 74 6f 20 61 6c 6c 20 | 63 6c 69 65 6e 74 73 2c | to all |clients,|
|00002930| 20 6f 72 20 6e 6f 74 20 | 61 74 20 61 6c 6c 2e 0a | or not |at all..|
|00002940| 0a 0a 41 20 75 73 65 66 | 75 6c 20 74 6f 6f 6c 20 |..A usef|ul tool |
|00002950| 66 6f 72 20 74 68 69 73 | 20 69 73 20 5c 70 72 6f |for this| is \pro|
|00002960| 67 7b 74 63 70 64 7d 2c | 5c 66 6f 6f 74 6e 6f 74 |g{tcpd},|\footnot|
|00002970| 65 7b 0a 20 20 57 72 69 | 74 74 65 6e 20 62 79 20 |e{. Wri|tten by |
|00002980| 57 69 65 74 73 65 20 56 | 65 6e 65 6d 61 2c 20 5c |Wietse V|enema, \|
|00002990| 65 6d 61 69 6c 7b 77 69 | 65 74 73 65 40 77 7a 76 |email{wi|etse@wzv|
|000029a0| 2e 77 69 6e 2e 74 75 65 | 2e 6e 6c 7d 2e 0a 7d 20 |.win.tue|.nl}..} |
|000029b0| 61 20 73 6f 2d 63 61 6c | 6c 65 64 20 64 61 65 6d |a so-cal|led daem|
|000029c0| 6f 6e 20 77 72 61 70 70 | 65 72 2e 20 46 6f 72 20 |on wrapp|er. For |
|000029d0| 54 43 50 20 73 65 72 76 | 69 63 65 73 20 79 6f 75 |TCP serv|ices you|
|000029e0| 20 77 61 6e 74 20 74 6f | 20 6d 6f 6e 69 74 6f 72 | want to| monitor|
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|00003510| 61 72 7b 2e 79 6f 75 72 | 2e 64 6f 6d 61 69 6e 7d |ar{.your|.domain}|
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|000035f0| 67 69 6e 7b 76 65 72 62 | 61 74 69 6d 7d 0a 69 6e |gin{verb|atim}.in|
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|00003610| 54 20 4c 4f 43 41 4c 2c | 20 2e 76 62 72 65 77 2e |T LOCAL,| .vbrew.|
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|00003650| 6c 6f 67 2f 66 69 6e 67 | 65 72 2e 6c 6f 67 3b 20 |log/fing|er.log; |
|00003660| 5c 0a 20 20 20 20 20 20 | 69 66 20 5b 20 25 68 20 |\. |if [ %h |
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|00003680| 2e 63 6f 6d 22 20 5d 3b | 20 74 68 65 6e 20 5c 0a |.com" ];| then \.|
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|000036c0| 0a 20 20 20 20 20 20 66 | 69 0a 5c 65 6e 64 7b 76 |. f|i.\end{v|
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|000036e0| 63 72 65 65 6e 7d 0a 0a | 54 68 65 20 5c 6b 65 79 |creen}..|The \key|
|000036f0| 77 6f 72 64 7b 5c 25 68 | 7d 20 61 6e 64 20 5c 6b |word{\%h|} and \k|
|00003700| 65 79 77 6f 72 64 7b 5c | 25 64 7d 20 61 72 67 75 |eyword{\|%d} argu|
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|00003770| 20 72 65 66 65 72 20 74 | 6f 20 74 68 65 0a 5c 66 | refer t|o the.\f|
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|00003790| 73 28 35 29 7d 20 6d 61 | 6e 75 61 6c 20 70 61 67 |s(5)} ma|nual pag|
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|000037e0| 5c 70 72 6f 67 7b 74 63 | 70 64 7d 7c 29 7d 0a 5c |\prog{tc|pd}|)}.\|
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|00003800| 74 64 40 5c 70 72 6f 67 | 7b 69 6e 65 74 64 7d 7c |td@\prog|{inetd}||
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|00003860| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00003870| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00003880| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00003890| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
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|00003ab0| 69 6c 65 7b 2f 65 74 63 | 2f 73 65 72 76 69 63 65 |ile{/etc|/service|
|00003ac0| 73 7d 2e 20 20 41 6e 20 | 65 6e 74 72 79 20 69 73 |s}. An |entry is|
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|00003af0| 72 65 65 6e 7d 0a 5c 76 | 61 72 7b 73 65 72 76 69 |reen}.\v|ar{servi|
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|00003b10| 76 61 72 7b 70 72 6f 74 | 6f 63 6f 6c 7d 20 20 20 |var{prot|ocol} |
|00003b20| 5b 5c 76 61 72 7b 61 6c | 69 61 73 65 73 7d 5d 0a |[\var{al|iases}].|
|00003b30| 5c 65 6e 64 7b 74 73 63 | 72 65 65 6e 7d 0a 0a 0a |\end{tsc|reen}...|
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|00003d90| 20 4e 65 76 65 72 74 68 | 65 6c 65 73 73 2c 20 77 | Neverth|eless, w|
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|00003dd0| 62 65 67 69 6e 7b 74 73 | 63 72 65 65 6e 7d 0a 5c |begin{ts|creen}.\|
|00003de0| 62 65 67 69 6e 7b 76 65 | 72 62 61 74 69 6d 7d 0a |begin{ve|rbatim}.|
|00003df0| 23 20 54 68 65 20 73 65 | 72 76 69 63 65 73 20 66 |# The se|rvices f|
|00003e00| 69 6c 65 3a 0a 23 0a 23 | 20 77 65 6c 6c 2d 6b 6e |ile:.#.#| well-kn|
|00003e10| 6f 77 6e 20 73 65 72 76 | 69 63 65 73 0a 65 63 68 |own serv|ices.ech|
|00003e20| 6f 20 20 20 20 20 20 20 | 20 20 20 20 37 2f 74 63 |o | 7/tc|
|00003e30| 70 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |p | |
|00003e40| 20 20 23 20 45 63 68 6f | 0a 65 63 68 6f 20 20 20 | # Echo|.echo |
|00003e50| 20 20 20 20 20 20 20 20 | 37 2f 75 64 70 20 20 20 | |7/udp |
|00003e60| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 23 0a | | #.|
|00003e70| 64 69 73 63 61 72 64 20 | 20 20 20 20 20 20 20 39 |discard | 9|
|00003e80| 2f 74 63 70 20 20 73 69 | 6e 6b 20 6e 75 6c 6c 20 |/tcp si|nk null |
|00003e90| 20 20 20 20 20 23 20 44 | 69 73 63 61 72 64 0a 64 | # D|iscard.d|
|00003ea0| 69 73 63 61 72 64 20 20 | 20 20 20 20 20 20 39 2f |iscard | 9/|
|00003eb0| 75 64 70 20 20 73 69 6e | 6b 20 6e 75 6c 6c 20 20 |udp sin|k null |
|00003ec0| 20 20 20 20 23 0a 64 61 | 79 74 69 6d 65 20 20 20 | #.da|ytime |
|00003ed0| 20 20 20 20 31 33 2f 74 | 63 70 20 20 20 20 20 20 | 13/t|cp |
|00003ee0| 20 20 20 20 20 20 20 20 | 20 20 20 23 20 44 61 79 | | # Day|
|00003ef0| 74 69 6d 65 0a 64 61 79 | 74 69 6d 65 20 20 20 20 |time.day|time |
|00003f00| 20 20 20 31 33 2f 75 64 | 70 20 20 20 20 20 20 20 | 13/ud|p |
|00003f10| 20 20 20 20 20 20 20 20 | 20 20 23 0a 63 68 61 72 | | #.char|
|00003f20| 67 65 6e 20 20 20 20 20 | 20 20 31 39 2f 74 63 70 |gen | 19/tcp|
|00003f30| 20 20 74 74 79 74 73 74 | 20 73 6f 75 72 63 65 20 | ttytst| source |
|00003f40| 20 23 20 43 68 61 72 61 | 63 74 65 72 20 47 65 6e | # Chara|cter Gen|
|00003f50| 65 72 61 74 6f 72 0a 63 | 68 61 72 67 65 6e 20 20 |erator.c|hargen |
|00003f60| 20 20 20 20 20 31 39 2f | 75 64 70 20 20 74 74 79 | 19/|udp tty|
|00003f70| 74 73 74 20 73 6f 75 72 | 63 65 20 20 23 0a 66 74 |tst sour|ce #.ft|
|00003f80| 70 2d 64 61 74 61 20 20 | 20 20 20 20 32 30 2f 74 |p-data | 20/t|
|00003f90| 63 70 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |cp | |
|00003fa0| 20 20 20 23 20 46 69 6c | 65 20 54 72 61 6e 73 66 | # Fil|e Transf|
|00003fb0| 65 72 20 50 72 6f 74 6f | 63 6f 6c 20 28 44 61 74 |er Proto|col (Dat|
|00003fc0| 61 29 0a 66 74 70 20 20 | 20 20 20 20 20 20 20 20 |a).ftp | |
|00003fd0| 20 32 31 2f 74 63 70 20 | 20 20 20 20 20 20 20 20 | 21/tcp | |
|00003fe0| 20 20 20 20 20 20 20 20 | 23 20 46 69 6c 65 20 54 | |# File T|
|00003ff0| 72 61 6e 73 66 65 72 20 | 50 72 6f 74 6f 63 6f 6c |ransfer |Protocol|
|00004000| 20 28 43 6f 6e 74 72 6f | 6c 29 0a 74 65 6c 6e 65 | (Contro|l).telne|
|00004010| 74 20 20 20 20 20 20 20 | 20 32 33 2f 74 63 70 20 |t | 23/tcp |
|00004020| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004030| 23 20 56 69 72 74 75 61 | 6c 20 54 65 72 6d 69 6e |# Virtua|l Termin|
|00004040| 61 6c 20 50 72 6f 74 6f | 63 6f 6c 0a 73 6d 74 70 |al Proto|col.smtp|
|00004050| 20 20 20 20 20 20 20 20 | 20 20 32 35 2f 74 63 70 | | 25/tcp|
|00004060| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004070| 20 23 20 53 69 6d 70 6c | 65 20 4d 61 69 6c 20 54 | # Simpl|e Mail T|
|00004080| 72 61 6e 73 66 65 72 20 | 50 72 6f 74 6f 63 6f 6c |ransfer |Protocol|
|00004090| 0a 6e 6e 74 70 20 20 20 | 20 20 20 20 20 20 31 31 |.nntp | 11|
|000040a0| 39 2f 74 63 70 20 20 72 | 65 61 64 6e 65 77 73 20 |9/tcp r|eadnews |
|000040b0| 20 20 20 20 20 20 23 20 | 4e 65 74 77 6f 72 6b 20 | # |Network |
|000040c0| 4e 65 77 73 20 54 72 61 | 6e 73 66 65 72 20 50 72 |News Tra|nsfer Pr|
|000040d0| 6f 74 6f 63 6f 6c 0a 23 | 0a 23 20 55 4e 49 58 20 |otocol.#|.# UNIX |
|000040e0| 73 65 72 76 69 63 65 73 | 0a 65 78 65 63 20 20 20 |services|.exec |
|000040f0| 20 20 20 20 20 20 35 31 | 32 2f 74 63 70 20 20 20 | 51|2/tcp |
|00004100| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 23 20 | | # |
|00004110| 42 53 44 20 72 65 78 65 | 63 64 0a 62 69 66 66 20 |BSD rexe|cd.biff |
|00004120| 20 20 20 20 20 20 20 20 | 35 31 32 2f 75 64 70 20 | |512/udp |
|00004130| 20 63 6f 6d 73 61 74 20 | 20 20 20 20 20 20 20 20 | comsat | |
|00004140| 23 20 6d 61 69 6c 20 6e | 6f 74 69 66 69 63 61 74 |# mail n|otificat|
|00004150| 69 6f 6e 0a 6c 6f 67 69 | 6e 20 20 20 20 20 20 20 |ion.logi|n |
|00004160| 20 35 31 33 2f 74 63 70 | 20 20 20 20 20 20 20 20 | 513/tcp| |
|00004170| 20 20 20 20 20 20 20 20 | 20 23 20 72 65 6d 6f 74 | | # remot|
|00004180| 65 20 6c 6f 67 69 6e 0a | 77 68 6f 20 20 20 20 20 |e login.|who |
|00004190| 20 20 20 20 20 35 31 33 | 2f 75 64 70 20 20 77 68 | 513|/udp wh|
|000041a0| 6f 64 20 20 20 20 20 20 | 20 20 20 20 20 23 20 72 |od | # r|
|000041b0| 65 6d 6f 74 65 20 77 68 | 6f 20 61 6e 64 20 75 70 |emote wh|o and up|
|000041c0| 74 69 6d 65 0a 73 68 65 | 6c 6c 20 20 20 20 20 20 |time.she|ll |
|000041d0| 20 20 35 31 34 2f 74 63 | 70 20 20 63 6d 64 20 20 | 514/tc|p cmd |
|000041e0| 20 20 20 20 20 20 20 20 | 20 20 23 20 72 65 6d 6f | | # remo|
|000041f0| 74 65 20 63 6f 6d 6d 61 | 6e 64 2c 20 6e 6f 20 70 |te comma|nd, no p|
|00004200| 61 73 73 77 64 20 75 73 | 65 64 0a 73 79 73 6c 6f |asswd us|ed.syslo|
|00004210| 67 20 20 20 20 20 20 20 | 35 31 34 2f 75 64 70 20 |g |514/udp |
|00004220| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004230| 23 20 72 65 6d 6f 74 65 | 20 73 79 73 74 65 6d 20 |# remote| system |
|00004240| 6c 6f 67 67 69 6e 67 0a | 70 72 69 6e 74 65 72 20 |logging.|printer |
|00004250| 20 20 20 20 20 35 31 35 | 2f 74 63 70 20 20 73 70 | 515|/tcp sp|
|00004260| 6f 6f 6c 65 72 20 20 20 | 20 20 20 20 20 23 20 72 |ooler | # r|
|00004270| 65 6d 6f 74 65 20 70 72 | 69 6e 74 20 73 70 6f 6f |emote pr|int spoo|
|00004280| 6c 69 6e 67 0a 72 6f 75 | 74 65 20 20 20 20 20 20 |ling.rou|te |
|00004290| 20 20 35 32 30 2f 75 64 | 70 20 20 72 6f 75 74 65 | 520/ud|p route|
|000042a0| 72 20 72 6f 75 74 65 64 | 20 20 23 20 72 6f 75 74 |r routed| # rout|
|000042b0| 69 6e 67 20 69 6e 66 6f | 72 6d 61 74 69 6f 6e 20 |ing info|rmation |
|000042c0| 70 72 6f 74 6f 63 6f 6c | 0a 5c 65 6e 64 7b 76 65 |protocol|.\end{ve|
|000042d0| 72 62 61 74 69 6d 7d 0a | 5c 65 6e 64 7b 74 73 63 |rbatim}.|\end{tsc|
|000042e0| 72 65 65 6e 7d 0a 0a 0a | 4e 6f 74 65 20 74 68 61 |reen}...|Note tha|
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|00004300| 74 68 65 20 5c 70 72 6f | 67 7b 65 63 68 6f 7d 20 |the \pro|g{echo} |
|00004310| 73 65 72 76 69 63 65 20 | 69 73 20 6f 66 66 65 72 |service |is offer|
|00004320| 65 64 20 6f 6e 0a 70 6f | 72 74 20 37 20 66 6f 72 |ed on.po|rt 7 for|
|00004330| 20 62 6f 74 68 20 54 43 | 50 20 61 6e 64 20 55 44 | both TC|P and UD|
|00004340| 50 2c 20 61 6e 64 20 74 | 68 61 74 20 70 6f 72 74 |P, and t|hat port|
|00004350| 20 35 31 32 20 69 73 20 | 75 73 65 64 20 66 6f 72 | 512 is |used for|
|00004360| 20 74 77 6f 20 64 69 66 | 66 65 72 65 6e 74 0a 73 | two dif|ferent.s|
|00004370| 65 72 76 69 63 65 73 2c | 20 6e 61 6d 65 6c 79 20 |ervices,| namely |
|00004380| 74 68 65 20 43 4f 4d 53 | 41 54 20 64 61 65 6d 6f |the COMS|AT daemo|
|00004390| 6e 20 28 77 68 69 63 68 | 20 6e 6f 74 69 66 69 65 |n (which| notifie|
|000043a0| 73 20 75 73 65 72 73 20 | 6f 66 20 6e 65 77 6c 79 |s users |of newly|
|000043b0| 0a 61 72 72 69 76 65 64 | 20 6d 61 69 6c 2c 20 73 |.arrived| mail, s|
|000043c0| 65 65 20 5c 70 72 6f 67 | 7b 78 62 69 66 66 28 31 |ee \prog|{xbiff(1|
|000043d0| 78 29 7d 29 2c 20 6f 76 | 65 72 20 55 44 50 2c 20 |x)}), ov|er UDP, |
|000043e0| 61 6e 64 20 66 6f 72 20 | 72 65 6d 6f 74 65 0a 65 |and for |remote.e|
|000043f0| 78 65 63 75 74 69 6f 6e | 20 28 5c 70 72 6f 67 7b |xecution| (\prog{|
|00004400| 72 65 78 65 63 28 31 29 | 7d 29 2c 20 75 73 69 6e |rexec(1)|}), usin|
|00004410| 67 20 54 43 50 2e 0a 0a | 0a 5c 69 6e 64 65 78 7b |g TCP...|.\index{|
|00004420| 70 72 6f 74 6f 63 6f 6c | 20 6e 75 6d 62 65 72 73 |protocol| numbers|
|00004430| 7d 0a 53 69 6d 69 6c 61 | 72 20 74 6f 20 74 68 65 |}.Simila|r to the|
|00004440| 20 73 65 72 76 69 63 65 | 73 20 66 69 6c 65 2c 20 | service|s file, |
|00004450| 74 68 65 20 6e 65 74 77 | 6f 72 6b 69 6e 67 20 6c |the netw|orking l|
|00004460| 69 62 72 61 72 79 20 6e | 65 65 64 73 20 61 20 77 |ibrary n|eeds a w|
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|00004480| 70 72 6f 74 6f 63 6f 6c | 20 6e 61 6d 65 73 7e 2d |protocol| names~-|
|00004490| 2d 2d 20 66 6f 72 20 65 | 78 61 6d 70 6c 65 2c 20 |-- for e|xample, |
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|000044c0| 2d 2d 2d 20 74 6f 20 70 | 72 6f 74 6f 63 6f 6c 20 |--- to p|rotocol |
|000044d0| 6e 75 6d 62 65 72 73 20 | 75 6e 64 65 72 73 74 6f |numbers |understo|
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