OldeWorldeWebServices

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New technology for describing old protocols.

Many of the networked services we use on the Web, and with the Web, predate our current concern for XML-based protocols.

HTTP and SOAP are great and everything, but how about trying to use RDF/XML for describing the kinds of services that already populate the Internet. ldap, SSH, SMTP, IMAP, POP, IRC, Z39.50... there are dozens of protocols out there already, exchanging cryptic messages on different ports. Some, but not all, are standardised. But there is no standard or even defacto mechanism for describing and discovering them all. Or none that I've heard of.... How for example do gameplayers find Quake servers? How do I remember how many Web servers I'm running, their ports and purposes?

The new world of XML-based Web Services offers some techniques for technology-sharing across protocols. XML and SOAP-based Web services share a lot more common structure than the protocols listed below, which share little more than network-level "plumbing". But the old world is still out there, and real people and companies are spending real time and money trying to manage, catalogue, discover and maintain services using pre-"Web Service" services.

If that's the case, how can might an RDF/XML vocabulary for describing these services look?

a quick sketch

...of how it might look.

Note that we indirect through the use of protocol spec URIs to avoid maintaining an expensive central registry of protocols. The Web works well enough as a registry, it is doubtful we could do a better job.

This markup describes some services in RDF/XML. Note that the same markup can be used to describe radically different application areas. Each one perhaps rather niche (libraries, gamers...) but if a simple common language can benefit them all, the costs may be low enough to proceed with this idea. Note also that the use of RDF and XML namespaces allows these descriptions to be mixed freely with others. For example we might give sysadmin contact details for the various services, or in the case of the digital library scenario hinted at in the first example, we could use richer RDF to characterise the collection exposed using the protocol. This namespace mixing also allows our core vocabulary to be rather simple, since others can extend their service descriptions with more application-specific vocabulary.


<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns="http://esw.w3.org/topic/OldeWorldeWebServices#vocab"
         xmlns:dc="http://purl.org/dc/elements/1.1/"
         xmlns:owws="http://esw.w3.org/topic/OldeWorldeWebServices#vocab">

<Service rdf:about="z3950://biblio.example.org/opac1">
 <protocolIanaName>z3950</protocolIanaName>
 <path>/opac1</path>
 <host>biblio.example.org</host>
 <protcolSpecification rdf:resource="http://www.loc.gov/z3950/agency/document.html"/>
 <port>2100</port>
 <operationType>210/tcp</operationType>
  <dc:title>The example.org Online Public Access Catalog</dc:title>
  <dc:description>This is a bibliographic database. Books and stuff. Libraries use them...</dc:description>
</Service>

<Service>
  <host>frag.example.com</host>
  <port>26000</port>
  <operationType>udp</operationType>
  <protocolSpecification rdf:resource="http://www.gamers.org/dEngine/quake/QDP/qnp.html">
  <dc:title>The example.com Quake gameserver</dc:title>
  <dc:description>Lots of popular games use network-based protocols, sometimes only partially
      documented. It is a common use case to be able to want to lookup nearby servers in a
      directory of some kind.
  </dc:description>
</Service>

<!-- others to writeup:
   LDAP (big corporate use)
   WWW (which servers are we running? who maintains them?); related to Apache XML config thread -->

</rdf:RDF>


nearby in the web

Thinks to link or write about...

  • RFC-1498 On the Naming and Binding of Network Destinations
  • URI scheme registry (in RDF...)
  • Describing search services, collection descriptions etc discussion from eLib/JISC lists
  • mapping services to their RFCs?
  • The z39.50 sample above shows this to be partly about decomposing URIs
  • The quake sample shows it working without a Quake service URI scheme
  • How does this compliment WSDL? Could we actually use WSDL for this? help! examples welcome...
  • What about Web Service choreography? Are any of these protocols stateful and representable using WS choreog techniques?
  • RDF for Web server config (discussion; example)

retro chic: /etc/services

From /etc/services on a Debian Linux machine: some well known networked services


# Network services, Internet style
#
# Note that it is presently the policy of IANA to assign a single well-known
# port number for both TCP and UDP; hence, officially ports have two entries
# even if the protocol doesn't support UDP operations.
#
# Updated from http://www.iana.org/assignments/port-numbers and other sources.
# New ports will be added on request if they have been officially assigned
# by IANA or are needed by a debian package.
# If you need a huge list of used numbers please install the nmap package.

tcpmux          1/tcp                           # TCP port service multiplexer
echo            7/tcp
echo            7/udp
discard         9/tcp           sink null
discard         9/udp           sink null
systat          11/tcp          users
daytime         13/tcp
daytime         13/udp
netstat         15/tcp
qotd            17/tcp          quote
msp             18/tcp                          # message send protocol
msp             18/udp                          # message send protocol
chargen         19/tcp          ttytst source
chargen         19/udp          ttytst source
ftp-data        20/tcp
ftp             21/tcp
fsp             21/udp          fspd
ssh             22/tcp                          # SSH Remote Login Protocol
ssh             22/udp                          # SSH Remote Login Protocol
telnet          23/tcp
smtp            25/tcp          mail
time            37/tcp          timserver
time            37/udp          timserver
rlp             39/udp          resource        # resource location
nameserver      42/tcp          name            # IEN 116
whois           43/tcp          nicname
re-mail-ck      50/tcp                          # Remote Mail Checking Protocol
re-mail-ck      50/udp                          # Remote Mail Checking Protocol
domain          53/tcp          nameserver      # name-domain server
domain          53/udp          nameserver
mtp             57/tcp                          # deprecated
bootps          67/tcp                          # BOOTP server
bootps          67/udp
bootpc          68/tcp                          # BOOTP client
bootpc          68/udp
tftp            69/udp
gopher          70/tcp                          # Internet Gopher
gopher          70/udp
rje             77/tcp          netrjs
finger          79/tcp
www             80/tcp          http            # WorldWideWeb HTTP
www             80/udp                          # HyperText Transfer Protocol
link            87/tcp          ttylink
kerberos        88/tcp          kerberos5 krb5 kerberos-sec     # Kerberos v5
kerberos        88/udp          kerberos5 krb5 kerberos-sec     # Kerberos v5
supdup          95/tcp
hostnames       101/tcp         hostname        # usually from sri-nic
iso-tsap        102/tcp         tsap            # part of ISODE.
csnet-ns        105/tcp         cso-ns          # also used by CSO name server
csnet-ns        105/udp         cso-ns
rtelnet         107/tcp                         # Remote Telnet
rtelnet         107/udp
pop2            109/tcp         postoffice pop-2        # POP version 2
pop2            109/udp         pop-2
pop3            110/tcp         pop-3           # POP version 3
pop3            110/udp         pop-3
sunrpc          111/tcp         portmapper      # RPC 4.0 portmapper TCP
sunrpc          111/udp         portmapper      # RPC 4.0 portmapper UDP
auth            113/tcp         authentication tap ident
sftp            115/tcp
uucp-path       117/tcp
nntp            119/tcp         readnews untp   # USENET News Transfer Protocol
ntp             123/tcp
ntp             123/udp                         # Network Time Protocol
pwdgen          129/tcp                         # PWDGEN service
pwdgen          129/udp                         # PWDGEN service
netbios-ns      137/tcp                         # NETBIOS Name Service
netbios-ns      137/udp
netbios-dgm     138/tcp                         # NETBIOS Datagram Service
netbios-dgm     138/udp
netbios-ssn     139/tcp                         # NETBIOS session service
netbios-ssn     139/udp
imap2           143/tcp         imap            # Interim Mail Access P 2 and 4
imap2           143/udp         imap
snmp            161/udp                         # Simple Net Mgmt Proto
snmp-trap       162/udp         snmptrap        # Traps for SNMP
cmip-man        163/tcp                         # ISO mgmt over IP (CMOT)
cmip-man        163/udp
cmip-agent      164/tcp
cmip-agent      164/udp
mailq           174/tcp                         # Mailer transport queue for Zmailer
mailq           174/udp                         # Mailer transport queue for Zmailer
xdmcp           177/tcp                         # X Display Mgr. Control Proto
xdmcp           177/udp
nextstep        178/tcp         NeXTStep NextStep       # NeXTStep window
nextstep        178/udp         NeXTStep NextStep       # server
bgp             179/tcp                         # Border Gateway Proto.
bgp             179/udp
prospero        191/tcp                         # Cliff Neuman's Prospero
prospero        191/udp
irc             194/tcp                         # Internet Relay Chat
irc             194/udp
smux            199/tcp                         # SNMP Unix Multiplexer
smux            199/udp
at-rtmp         201/tcp                         # AppleTalk routing
at-rtmp         201/udp
at-nbp          202/tcp                         # AppleTalk name binding
at-nbp          202/udp
at-echo         204/tcp                         # AppleTalk echo
at-echo         204/udp
at-zis          206/tcp                         # AppleTalk zone information
at-zis          206/udp
qmtp            209/tcp                         # The Quick Mail Transfer Protocol
qmtp            209/udp                         # The Quick Mail Transfer Protocol
z3950           210/tcp         wais            # NISO Z39.50 database
z3950           210/udp         wais
ipx             213/tcp                         # IPX
ipx             213/udp
imap3           220/tcp                         # Interactive Mail Access
imap3           220/udp                         # Protocol v3
pawserv         345/tcp                         # Perf Analysis Workbench
pawserv         345/udp                         # Perf Analysis Workbench
zserv           346/tcp                         # Zebra server
zserv           346/udp                         # Zebra server
fatserv         347/tcp                         # Fatmen Server
fatserv         347/udp                         # Fatmen Server
rpc2portmap     369/udp                         # Coda portmapper
codaauth2       370/tcp
codaauth2       370/udp                         # Coda authentication server
ulistserv       372/tcp                         # UNIX Listserv
ulistserv       372/udp
ldap            389/tcp                         # Lightweight Directory Access Protocol
ldap            389/udp                         # Lightweight Directory Access Protocol
https           443/tcp                         # http protocol over TLS/SSL
https           443/udp                         # http protocol over TLS/SSL
snpp            444/tcp                         # Simple Network Paging Protocol
snpp            444/udp                         # Simple Network Paging Protocol
microsoft-ds    445/tcp                         # Micorsoft Naked CIFS
microsoft-ds    445/udp                         # Micorsoft Naked CIFS
saft            487/tcp                         # Simple Asynchronous File Transfer
saft            487/udp                         # Simple Asynchronous File Transfer
npmp-local      610/tcp         dqs313_qmaster  # npmp-local / DQS
npmp-local      610/udp         dqs313_qmaster  # npmp-local / DQS
npmp-gui        611/tcp         dqs313_execd    # npmp-gui / DQS
npmp-gui        611/udp         dqs313_execd    # npmp-gui / DQS
hmmp-ind        612/tcp         dqs313_intercell # HMMP Indication / DQS
hmmp-ind        612/udp         dqs313_intercell # HMMP Indication / DQS
ipp             631/tcp                         # Internet Printing Protocol
ipp             631/udp                         # Internet Printing Protocol
#
# UNIX specific services
#
exec            512/tcp
biff            512/udp         comsat
login           513/tcp
who             513/udp         whod
shell           514/tcp         cmd             # no passwords used
syslog          514/udp
printer         515/tcp         spooler         # line printer spooler
talk            517/udp
ntalk           518/udp
route           520/udp         router routed   # RIP
timed           525/udp         timeserver
tempo           526/tcp         newdate
courier         530/tcp         rpc
conference      531/tcp         chat
netnews         532/tcp         readnews
netwall         533/udp                         # -for emergency broadcasts
gdomap          538/tcp                         # GNUstep distributed objects
gdomap          538/udp                         # GNUstep distributed objects
uucp            540/tcp         uucpd           # uucp daemon
klogin          543/tcp                         # Kerberized `rlogin' (v5)
kshell          544/tcp         krcmd           # Kerberized `rsh' (v5)
afpovertcp      548/tcp                         # AFP over TCP
afpovertcp      548/udp                         # AFP over TCP
remotefs        556/tcp         rfs_server rfs  # Brunhoff remote filesystem
nntps           563/tcp         snntp           # NNTP over SSL
nntps           563/udp         snntp           # NNTP over SSL
submission      587/tcp                         # Submission [RFC2487]
submission      587/udp                         # Submission [RFC2487]
ldaps           636/tcp                         # LDAP over SSL
ldaps           636/udp                         # LDAP over SSL
tinc            655/tcp                         # tinc control port
tinc            655/udp                         # tinc packet port
silc            706/tcp                         # SILC
silc            706/udp                         # SILC
kerberos-adm    749/tcp                         # Kerberos `kadmin' (v5)
webster         765/tcp                         # Network dictionary
webster         765/udp
rsync           873/tcp                         # rsync
rsync           873/udp                         # rsync
ftps-data       989/tcp                         # FTP over SSL (data)
ftps            990/tcp                         # FTP over SSL
telnets         992/tcp                         # Telnet over SSL
telnets         992/udp                         # Telnet over SSL
imaps           993/tcp                         # IMAP over SSL
imaps           993/udp                         # IMAP over SSL
ircs            994/tcp                         # IRC over SSL
ircs            994/udp                         # IRC over SSL
pop3s           995/tcp                         # POP-3 over SSL
pop3s           995/udp                         # POP-3 over SSL
#
# From ``Assigned Numbers'':
#
#> The Registered Ports are not controlled by the IANA and on most systems
#> can be used by ordinary user processes or programs executed by ordinary
#> users.
#
#> Ports are used in the TCP [45,106] to name the ends of logical
#> connections which carry long term conversations.  For the purpose of
#> providing services to unknown callers, a service contact port is
#> defined.  This list specifies the port used by the server process as its
#> contact port.  While the IANA can not control uses of these ports it
#> does register or list uses of these ports as a convienence to the
#> community.
#
socks           1080/tcp                        # socks proxy server
socks           1080/udp                        # socks proxy server
lotusnote       1352/tcp        lotusnotes      # Lotus Note
lotusnote       1352/udp        lotusnotes      # Lotus Note
ingreslock      1524/tcp
ingreslock      1524/udp
prospero-np     1525/tcp                        # Prospero non-privileged
prospero-np     1525/udp
datametrics     1645/tcp        old-radius      # datametrics / old radius entry
datametrics     1645/udp        old-radius      # datametrics / old radius entry
sa-msg-port     1646/tcp        old-radacct     # sa-msg-port / old radacct entry
sa-msg-port     1646/udp        old-radacct     # sa-msg-port / old radacct entry
radius          1812/tcp                        # Radius
radius          1812/udp                        # Radius
radius-acct     1813/tcp        radacct         # Radius Accounting
radius-acct     1813/udp        radacct         # Radius Accounting
rtcm-sc104      2101/tcp                        # RTCM SC-104 IANA 1/29/99
rtcm-sc104      2101/udp                        # RTCM SC-104 IANA 1/29/99
cvspserver      2401/tcp                        # CVS client/server operations
cvspserver      2401/udp                        # CVS client/server operations
venus           2430/tcp                        # codacon port
venus           2430/udp                        # Venus callback/wbc interface
venus-se        2431/tcp                        # tcp side effects
venus-se        2431/udp                        # udp sftp side effect
codasrv         2432/tcp                        # not used
codasrv         2432/udp                        # server port
codasrv-se      2433/tcp                        # tcp side effects
codasrv-se      2433/udp                        # udp sftp side effect
mon             2583/tcp                        # MON
mon             2583/udp                        # MON
dict            2628/tcp                        # Dictionary server
dict            2628/udp                        # Dictionary server
gds_db          3050/tcp                        # InterBase server
gds_db          3050/udp                        # InterBase server
icpv2           3130/tcp        icp             # Internet Cache Protocol (Squid)
icpv2           3130/udp        icp             # Internet Cache Protocol (Squid)
mysql           3306/tcp                        # MySQL
mysql           3306/udp                        # MySQL
distcc          3632/tcp                        # distributed compiler
distcc          3632/udp                        # distributed complier
rfe             5002/tcp                        # Radio Free Ethernet
rfe             5002/udp                        # Actually uses UDP only
jabber-client   5222/tcp                        # Jabber Client Connection
jabber-client   5222/udp                        # Jabber Client Connection
jabber-server   5269/tcp                        # Jabber Server Connection
jabber-server   5269/udp                        # Jabber Server Connection
cfengine        5308/tcp                        # CFengine
cfengine        5308/udp                        # CFengine
postgres        5432/tcp                        # PostgreSQL Database
postgres        5432/udp                        # PostgreSQL Database
x11             6000/tcp        x11-0           # X Window System
x11             6000/udp        x11-0           # X Window System
x11-1           6001/tcp                        # X Window System
x11-1           6001/udp                        # X Window System
x11-2           6002/tcp                        # X Window System
x11-2           6002/udp                        # X Window System
x11-3           6003/tcp                        # X Window System
x11-3           6003/udp                        # X Window System
x11-4           6004/tcp                        # X Window System
x11-4           6004/udp                        # X Window System
x11-5           6005/tcp                        # X Window System
x11-5           6005/udp                        # X Window System
x11-6           6006/tcp                        # X Window System
x11-6           6006/udp                        # X Window System
x11-7           6007/tcp                        # X Window System
x11-7           6007/udp                        # X Window System
afs3-fileserver 7000/tcp        bbs             # file server itself
afs3-fileserver 7000/udp        bbs             # file server itself
afs3-callback   7001/tcp                        # callbacks to cache managers
afs3-callback   7001/udp                        # callbacks to cache managers
afs3-prserver   7002/tcp                        # users & groups database
afs3-prserver   7002/udp                        # users & groups database
afs3-vlserver   7003/tcp                        # volume location database
afs3-vlserver   7003/udp                        # volume location database
afs3-kaserver   7004/tcp                        # AFS/Kerberos authentication
afs3-kaserver   7004/udp                        # AFS/Kerberos authentication
afs3-volser     7005/tcp                        # volume managment server
afs3-volser     7005/udp                        # volume managment server
afs3-errors     7006/tcp                        # error interpretation service
afs3-errors     7006/udp                        # error interpretation service
afs3-bos        7007/tcp                        # basic overseer process
afs3-bos        7007/udp                        # basic overseer process
afs3-update     7008/tcp                        # server-to-server updater
afs3-update     7008/udp                        # server-to-server updater
afs3-rmtsys     7009/tcp                        # remote cache manager service
afs3-rmtsys     7009/udp                        # remote cache manager service
font-service    7100/tcp        xfs             # X Font Service
font-service    7100/udp        xfs             # X Font Service
wnn6            22273/tcp                       # wnn6
wnn6            22273/udp                       # wnn6
#
# Datagram Delivery Protocol services
#
rtmp            1/ddp                           # Routing Table Maintenance Protocol
nbp             2/ddp                           # Name Binding Protocol
echo            4/ddp                           # AppleTalk Echo Protocol
zip             6/ddp                           # Zone Information Protocol

#=========================================================================
# The remaining port numbers are not as allocated by IANA.
#=========================================================================

# Kerberos (Project Athena/MIT) services
# Note that these are for Kerberos v4, and are unofficial.  Sites running
# v4 should uncomment these and comment out the v5 entries above.
#
kerberos4       750/udp         kerberos-iv kdc # Kerberos (server) udp
kerberos4       750/tcp         kerberos-iv kdc # Kerberos (server) tcp
kerberos_master 751/udp                         # Kerberos authentication
kerberos_master 751/tcp                         # Kerberos authentication
passwd_server   752/udp                         # Kerberos passwd server
krb_prop        754/tcp         krb5_prop hprop # Kerberos slave propagation
krbupdate       760/tcp         kreg            # Kerberos registration
kpasswd         761/tcp         kpwd            # Kerberos "passwd"
swat            901/tcp                         # swat
kpop            1109/tcp                        # Pop with Kerberos
knetd           2053/tcp                        # Kerberos de-multiplexor
zephyr-srv      2102/udp                        # Zephyr server
zephyr-clt      2103/udp                        # Zephyr serv-hm connection
zephyr-hm       2104/udp                        # Zephyr hostmanager
eklogin         2105/tcp                        # Kerberos encrypted rlogin
# Hmmm. Are we using Kv4 or Kv5 now? Worrying.
# The following is probably Kerberos v5  --- ajt@debian.org (11/02/2000)
kx              2111/tcp                        # X over Kerberos
iprop           2121/tcp                        # incremental propagation
#
# Unofficial but necessary (for NetBSD) services
supfilesrv      871/tcp                         # SUP server
supfiledbg      1127/tcp                        # SUP debugging

#
# Services added for the Debian GNU/Linux distribution
#
linuxconf       98/tcp                          # LinuxConf
poppassd        106/tcp                         # Eudora
poppassd        106/udp                         # Eudora
imsp            406/tcp                         # Interactive Mail Support Protocol
imsp            406/udp                         # Interactive Mail Support Protocol
ssmtp           465/tcp         smtps           # SMTP over SSL
nqs             607/tcp                         # Network Queuing system
moira_db        775/tcp                         # Moira database
moira_update    777/tcp                         # Moira update protocol.
moira_ureg      779/udp                         # Moira user registration.
omirr           808/tcp         omirrd          # online mirror
omirr           808/udp         omirrd          # online mirror
customs         1001/tcp                        # pmake customs server
customs         1001/udp                        # pmake customs server
rmiregistry     1099/tcp                        # Java RMI Registry
skkserv         1178/tcp                        # skk jisho server port
predict         1210/udp                        # predict -- satellite tracking
rmtcfg          1236/tcp                        # Gracilis Packeten remote config server
wipld           1300/tcp                        # Wipl network monitor
xtel            1313/tcp                        # french minitel
xtelw           1314/tcp                        # french minitel
support         1529/tcp                        # GNATS
sieve           2000/tcp                        # Sieve mail filter daemon
cfinger         2003/tcp                        # GNU Finger
ndtp            2010/tcp                        # Network dictionary transfer protocol
frox            2121/tcp                        # frox: caching ftp proxy
ninstall        2150/tcp                        # ninstall service
ninstall        2150/udp                        # ninstall service
zebrasrv        2600/tcp                        # zebra service
zebra           2601/tcp                        # zebra vty
ripd            2602/tcp                        # RIPd vty
ripngd          2603/tcp                        # RIPngd vty
ospfd           2604/tcp                        # OSPFd vty
bgpd            2605/tcp                        # BGPd vty
ospf6d          2606/tcp                        # OSPF6d vty
afbackup        2988/tcp                        # Afbackup system
afbackup        2988/udp                        # Afbackup system
afmbackup       2989/tcp                        # Afmbackup system
afmbackup       2989/udp                        # Afmbackup system
xtell           4224/tcp                        # xtell server
fax             4557/tcp                        # FAX transmission service (old)
hylafax         4559/tcp                        # HylaFAX client-server protocol (new)
pcrd            5151/tcp                        # PCR-1000 Daemon
noclog          5354/tcp                        # noclogd with TCP (nocol)
noclog          5354/udp                        # noclogd with UDP (nocol)
hostmon         5355/tcp                        # hostmon uses TCP (nocol)
hostmon         5355/udp                        # hostmon uses UDP (nocol)
mrtd            5674/tcp                        # MRT Routing Daemon
bgpsim          5675/tcp                        # MRT Routing Simulator
canna           5680/tcp                        # cannaserver
sane            6566/tcp        saned           # SANE network scanner daemon
ircd            6667/tcp                        # Internet Relay Chat
zope-ftp        8021/tcp                        # zope management by ftp
webcache        8080/tcp                        # WWW caching service
tproxy          8081/tcp                        # Transparent Proxy
omniorb         8088/tcp                        # OmniORB
omniorb         8088/udp                        # OmniORB
mandelspawn     9359/udp        mandelbrot      # network mandelbrot
zope            9673/tcp                        # zope server
amanda          10080/udp                       # amanda backup services
kamanda         10081/tcp                       # amanda backup services (Kerberos)
kamanda         10081/udp                       # amanda backup services (Kerberos)
amandaidx       10082/tcp                       # amanda backup services
amidxtape       10083/tcp                       # amanda backup services
smsqp           11201/tcp                       # Alamin SMS gateway
smsqp           11201/udp                       # Alamin SMS gateway
xpilot          15345/tcp                       # XPilot Contact Port
xpilot          15345/udp                       # XPilot Contact Port
sgi-cmsd        17001/udp                       # Cluster membership services daemon
sgi-crsd        17002/udp                       # Cluster reset services daemon
sgi-gcd         17003/udp                       # SGI Group membership daemon
sgi-cad         17004/tcp                       # Cluster Admin daemon
isdnlog         20011/tcp                       # isdn logging system
isdnlog         20011/udp                       # isdn logging system
vboxd           20012/tcp                       # voice box system
vboxd           20012/udp                       # voice box system
binkp           24554/tcp                       # binkp
asp             27374/tcp                       # Address Search Protocol
asp             27374/udp                       # Address Search Protocol
dircproxy       57000/tcp                       # Detachable IRC Proxy
tfido           60177/tcp                       # fidonet EMSI over telnet
fido            60179/tcp                       # fidonet EMSI over telnet


Tyler Durden says...                                         ...use SOAP