User's Manual

Appendix E Common Services
B222s User’s Guide
251
TACACS UDP 49 Login Host Prot ocol used for ( Term inal Access Cont roller
Access Cont rol Syst em ).
TELNET TCP 23 Telnet is t he login and t erm inal em ulat ion pr ot ocol
com m on on the I nt ernet and in UNI X env ironm ent s. I t
operat es over TCP/ I P netw orks. I ts prim ary function is to
allow users t o log into rem ote host syst em s.
TFTP UDP 69 Triv ial File Transfer Prot ocol is an I nt ernet file t ransfer
prot ocol sim ilar to FTP, but uses t he UDP ( User Dat agram
Prot ocol) rat her t han TCP (Transm ission Cont rol Prot ocol) .
VDOLI VE TCP 7000 Anot her videoconferencing solution.
Table 89 Com m only Used Ser vices ( cont inued)
NAME PROTOCOL PORT(S) DESCRIPTION