Port Assignments:

      Decimal   Keyword   Description                         References
      -------   -------   -----------                         ----------
      0                   Reserved 
      1-4 Unassigned                                               [JBP]
      5        RJE        Remote Job Entry                       [9,JBP]
      7        ECHO       Echo                                  [70,JBP]
      9        DISCARD    Discard                               [69,JBP]
      11       USERS      Active Users                          [65,JBP]
      13       DAYTIME    Daytime                               [68,JBP]
      15                  Unassigned                               [JBP]
      17       QUOTE      Quote of the Day                      [75,JBP]
      19       CHARGEN    Character Generator                   [67,JBP]
      20       FTP-DATA   File Transfer [Default Data]          [71,JBP]
      21       FTP        File Transfer [Control]               [71,JBP]
      23       TELNET     Telnet                                [87,JBP]
      25       SMTP       Simple Mail Transfer                  [77,JBP]
      27       NSW-FE     NSW User System FE                    [17,RHT]
      29       MSG-ICP    MSG ICP                               [63,RHT]
      31       MSG-AUTH   MSG Authentication                    [63,RHT]
      33       DSP        Display Support Protocol                 [MLC]
      35                  any private printer server               [JBP]
      37       TIME       Time                                  [83,JBP]
      39       RLP        Resource Location Protocol                [MA]
      41       GRAPHICS   Graphics                              [98,JBP]
      42       NAMESERVER Host Name Server                      [74,JBP]
      43       NICNAME    Who Is                               [46,JAKE]
      44       MPM-FLAGS  MPM FLAGS Protocol                       [JBP]
      45       MPM        Message Processing Module [recv]      [73,JBP]
      46       MPM-SND    MPM [default send]                    [73,JBP]
      47       NI-FTP     NI FTP                               [103,SK8]
      49       LOGIN      Login Host Protocol                     [PHD1]
      51       LA-MAINT   IMP Logical Address Maintenance       [58,AGM]
      53       DOMAIN     Domain Name Server                 [61,70,PM1]
      55       ISI-GL     ISI Graphics Language                  [6,RB9]
      57                  any private terminal access              [JBP]
      59                  any private file service                 [JBP]
      61       NI-MAIL    NI MAIL                                [4,SK8]
      63       VIA-FTP    VIA Systems - FTP                        [DXD]
      65       TACACS-DS  TACACS-Database Service                [3,RHT]
      67       BOOTPS     Bootstrap Protocol Server            [29,WJC2]
      68       BOOTPC     Bootstrap Protocol Client            [29,WJC2]
      69       TFTP       Trivial File Transfer                [95,DDC1]
      71       NETRJS-1   Remote Job Service                    [8,RTB3]
      72       NETRJS-2   Remote Job Service                    [8,RTB3]
      73       NETRJS-3   Remote Job Service                    [8,RTB3]
      74       NETRJS-4   Remote Job Service                    [8,RTB3]
      75                  any private dial out service             [JBP]
      77                  any private RJE service                  [JBP]
      79       FINGER     Finger                                [44,KLH]
      81       HOSTS2-NS  HOSTS2 Name Server                      [EAK1]
      83       MIT-ML-DEV MIT ML Device                            [DPR]
      85       MIT-ML-DEV MIT ML Device                            [DPR]
      87                  any private terminal link                [JBP]
      89       SU-MIT-TG  SU/MIT Telnet Gateway                    [MRC]
      91       MIT-DOV    MIT Dover Spooler                        [EBM]
      93       DCP        Device Control Protocol                 [DT15]
      95       SUPDUP     SUPDUP                                [20,MRC]
      97       SWIFT-RVF  Swift Remote Vitural File Protocol       [MXR]
      98       TACNEWS    TAC News                                [FRAN]
      99       METAGRAM   Metagram Relay                          [GEOF]
      101      HOSTNAME   NIC Host Name Server                 [45,JAKE]
      102      ISO-TSAP   ISO-TSAP                              [12,MTR]
      103      X400       X400                                    [HCF2]
      104      X400-SND   X400-SND                                [HCF2]
      105      CSNET-NS   Mailbox Name Nameserver              [96,MAS3]
      107      RTELNET    Remote Telnet Service                 [76,JBP]
      109      POP-2      Post Office Protocol - Version 2     [11,JKR1]
      111      SUNRPC     SUN Remote Procedure Call                [DXG]
      113      AUTH       Authentication Service               [99,MCSJ]
      115      SFTP       Simple File Transfer Protocol        [56,MKL1]
      117      UUCP-PATH  UUCP Path Service                     [35,MAE]
      119      NNTP       Network News Transfer Protocol        [53,PL4]
      121      ERPC       HYDRA Expedited Remote Procedure Call[101,JXO]
      123      NTP        Network Time Protocol                [60,DLM1]
      125      LOCUS-MAP  Locus PC-Interface Net Map Server    [105,BXG]
      127      LOCUS-CON  Locus PC-Interface Conn Server       [105,BXG]
      129      PWDGEN     Password Generator Protocol          [107,FJW]
      130      CISCO-FNA  CISCO FNATIVE                            [WXB]
      131      CISCO-TNA  CISCO TNATIVE                            [WXB]
      132      CISCO-SYS  CISCO SYSMAINT                           [WXB]
      133      STATSRV    Statistics Service                      [DLM1]
      134      INGRES-NET INGRES-NET Service                       [MXB]
      135      LOC-SRV    Location Service                         [JXP]
      136      PROFILE    PROFILE Naming System                    [LLP]
      137      NETBIOS-NS NETBIOS Name Service                     [JBP]
      138      NETBIOS-DGM NETBIOS Datagram Service                [JBP]
      139      NETBIOS-SSN NETBIOS Session Service                 [JBP]
      140      EMFIS-DATA EMFIS Data Service                       [GB7]
      141      EMFIS-CNTL EMFIS Control Service                    [GB7]
      142      BL-IDM     Britton-Lee IDM                         [SXS1]
      143-159             Unassigned                               [JBP]
      160-223             Reserved                                 [JBP]
      224-241             Unassigned                               [JBP]
      243      SUR-MEAS   Survey Measurement                      [5,AV]
      245      LINK       LINK                                 [10,RDB2]
      247-255             Unassigned                               [JBP]