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.CSNET
bzs%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