Who talks TCP?
RFC 839

Document Type RFC - Unknown (January 1983; No errata)
Obsoleted by RFC 842
Obsoletes RFC 838
Last updated 2013-03-02
Stream Legacy
Formats plain text pdf html bibtex
Stream Legacy state (None)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state RFC 839 (Unknown)
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                    D. Smallberg
Request for Comments:  839                               January 1983

                           Who Talks TCP?

The list of hosts was taken from the NIC hostname table of 31-Dec-82.
The tests were run on 25-Jan-83 from ~10:00 am to ~6:30 pm PST.
Dead, refused, and unreachable hosts were retried 26-Jan-83 from ~8:00 am
     to ~6:10 pm PST.

Claims are taken from the NIC host table:
        T = tcp (no particular services mentioned)
        t = tcp/telnet
        f = tcp/ftp
        s = tcp/smtp

Results for each service:
        blank (not accepted)
        refused
        unreachable
        dead
        accepted
        accepted+ (FTP allowed user anonymous, password guest)

Summary information:

   Telnet                             Result

                no telnet   unreachable   refused   dead   accepted
              +-----------+-------------+---------+------+------------+
C  tcp/telnet |      9    |       6     |     2   |  20  |    110     | 147
l             +-----------+-------------+---------+------+------------+
a  tcp        |      7    |       1     |     0   |   3  |     16     |  27
i             +-----------+-------------+---------+------+------------+
m  Nothing    |     58    |       4     |     1   |  30  |     56     | 149
              +-----------+-------------+---------+------+------------+----
                    74           11           3      53       182     | 323

   FTP                                Result
                                                           accepted or
               no tcp/ftp   unreachable   refused   dead   accepted+
              +-----------+-------------+---------+------+------------+
C  tcp/ftp    |     10    |       6     |     2   |  18  |     84     | 120
l             +-----------+-------------+---------+------+------------+
a  tcp        |      8    |       1     |     2   |   3  |     13     |  27
i             +-----------+-------------+---------+------+------------+
m  Nothing    |     64    |       4     |     8   |  32  |     68     | 176
              +-----------+-------------+---------+------+------------+----
                    82           11          12      53       165     | 323

Page 1


   SMTP                               Result

               no tcp/smtp  unreachable   refused   dead   accepted
              +-----------+-------------+---------+------+------------+
C  tcp/smtp   |      2    |       6     |     1   |  19  |     82     | 110
l             +-----------+-------------+---------+------+------------+
a  tcp        |      9    |       1     |     2   |   3  |     12     |  27
i             +-----------+-------------+---------+------+------------+
m  Nothing    |     76    |       4     |    10   |  31  |     65     | 186
              +-----------+-------------+---------+------+------------+----
                    87           11          13      53       159     | 323

Results in alphabetical order:

Name               Address      Claims  Telnet    FTP       SMTP
----               -------      ------  ------    ---       ----
acc                10.2.0.54     ----             d e a d
ada-vax            10.0.0.52     ----   accepted  accepted  accepted
aerospace          10.2.0.65     T---   accepted  accepted  accepted
afgl               10.1.0.66     ----   accepted  accepted  
afsc-ad            10.0.0.53     T---   accepted  accepted  
afsc-dev           10.2.0.53     ----   accepted  accepted  
afsc-hq            10.0.0.67     ----                       
afsc-sd            10.0.0.65     ----                       
afwl               10.0.0.48     ----   accepted  accepted  
aids-unix          10.3.0.56     ----       u n r e a c h a b l e
alta-coma          3.1.0.50      T---                       
ames-tss           10.0.0.16     ----   accepted  accepted  accepted
ames-vmsb          10.3.0.16     ----                       
anl                10.0.0.55     ----                       
anl-mcs            10.1.0.55     ----   accepted  accepted  accepted
arpa-dms           10.0.0.28     ----             d e a d
arpa-png11         10.3.0.28     ----                       
bbn-admin          3.1.0.6       -tfs   accepted  accepted  accepted
bbn-cd             3.3.0.9       -tfs   accepted  accepted  accepted
bbn-clxx           10.2.0.71     -tfs       u n r e a c h a b l e
bbn-inoc           10.2.0.82     ----                       
bbn-inoc           3.2.0.6       -tfs   accepted  accepted  accepted
bbn-noc            3.1.0.14      -tfs   accepted  accepted  accepted
bbn-noc2           10.6.0.82     -tfs   accepted  accepted  accepted
bbn-nu             10.0.0.72     ---s                       
bbn-rsm            10.4.0.82     -t--   accepted            
bbn-tenexb         10.0.0.49     -t--   accepted  accepted+ accepted
bbn-tenexc         10.3.0.49     -t--   accepted  refused   accepted
bbn-unix           10.1.0.72     ----   accepted  accepted  accepted
bbn-unix           3.1.0.4       -tfs   accepted  accepted  accepted
bbn-vax            10.1.0.82     -tfs   accepted  accepted  accepted
bbna               10.3.0.5      -tf-   accepted  accepted  accepted
bbncca             3.0.0.2       -tfs   accepted  accepted  accepted
Show full document text