hagan%UPenn-DCCS%upenn.csnet@CSNET-RELAY.ARPA (11/07/85)
I have DEC's Ultrix which is (for the most part) just bsd4.2 Unix. However,
my /etc/services reads as following:
#
# Network services, Internet style
#
echo 7/udp
discard 9/udp sink null
systat 11/tcp
daytime 13/tcp
netstat 15/tcp
ftp 21/tcp
telnet 23/tcp
smtp 25/tcp mail
time 37/tcp timserver
name 42/tcp nameserver
whois 43/tcp nicname
mtp 57/tcp # deprecated
hostnames 101/tcp hostname # usually from sri-nic
#
# Host specific functions
#
tftp 69/udp
rje 77/tcp
finger 79/tcp
link 87/tcp ttylink
supdup 95/tcp
ingreslock 1524/tcp
#
# UNIX specific services
#
exec 512/tcp
login 513/tcp
shell 514/tcp cmd # no passwords used
printer 515/tcp spooler # experimental
efs 520/tcp # for LucasFilm
courier 530/tcp rpc # experimental
biff 512/udp comsat
who 513/udp whod
syslog 514/udp
talk 517/udp
route 520/udp router routed # 521 also
new-rwho 550/udp new-who # experimental
rmonitor 560/udp rmonitord # experimental
monitor 561/udp # experimental
Althought I have some of these services in the form of startable background
daemons, I cannot seem to find any information on most of the "Network
Services, Internet Style". For example: I have SMTP and FTP, but lack:
echo, discard (both upd)
systat, daytime, netstat, time, name, whois, mtp, hostnames
rje, finger, link, supdup, and ingreslock.
Do you know where I can find most or all of these? Or could you tell me who
to contact?
Thanks in advance,
--Kid.
P.S. I am not a supscriber to Unix-WIZARDS, so please respond directly to
me: Hagan@UPenn.CSNETbzs%buit4%bostonu.csnet@CSNET-RELAY.ARPA (Barry Shein) (11/08/85)
Don't worry about it, most of the entries are informative so you don't accidently use one of those service ports for your own applications and (for example) find someone else's machine bothering you and getting confused, also if you eventually install the service you will need that port free and the entry in place. Consider it a harmless convenience. For example, we run our own finger software here (and time) at the specified port numbers, so they do exist at some sites. Some will probably never exist, but one has to really understand the issues to re-use them. Think of them like reserved vectors in a unibus address space for devices you don't own. -Barry Shein, Boston University
jbn@wdl1.UUCP (11/11/85)
However, a certain amount of suspicion about servers that run as root is always a good idea. JN