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The
ip service
command allows you to selectively disable (close) TCP/UDP well-known service ports and
enable them when necessary. This command only operates on TCP/UDP ports that are opened by default.
It has no effect on ports that are opened by loading applications, such as RIP and BGP.
In addition, the ip service command allows you to designate which port to enable or disable by specifying
the name of a service or the well-known port number associated with that service. For example, both of the
following commands disable the telnet service:
-> no ip service telnet
-> no ip service port 23
Note that specifying a port number requires the use of the optional port keyword.
To enable or disable more than one service in a single command line, enter each service name separated by
a space. For example, the following command enables the telnet, ftp, and snmp service ports:
-> ip service telnet ftp snmp
The following table lists ip service command options for specifying TCP/UDP services and also includes
the well-known port number associated with each service:
service
ftp
ssh
telnet
http
https
network-time
snmp
page 1128
port
21
22
23
80
443
123
161
OmniSwitch AOS Release 7 Network Configuration Guide
March 2011
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