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Configuring Telnet Service for Remote Access to a Router or Switch
To configure the router or switch to accept Telnet as an access service, include the telnet statement at the [edit system services] hierarchy level:
By default, the router or switch supports a limited number of simultaneous Telnet sessions and connection attempts per minute.
Optionally, you can include either or both of the following statements to change the defaults:
- connection-limit limit—Maximum number of simultaneous connections per protocol (IPV4 and IPv6). The range is from 1 through 250. The default is 75. When you configure a connection limit, the limit is applicable to the number of telnet sessions per protocol (IPv4 and IPv6). For example, a connection limit of 10 allows 10 IPv6 telnet sessions and 10 IPv4 telnet sessions.
- rate-limit limit—Maximum number of connection attempts accepted per minute (from 1 through 250). The default is 150. When you configure a rate limit, the limit is applicable to the number of connection attempts per protocol (IPv4 and IPv6). For example, a rate limit of 10 allows 10 IPv6 telnet session connection attempts per minute and 10 IPv4 telnet session connection attempts per minute.
You cannot include the telnet statement on devices that run the Junos-FIPS software. We recommend that you do not use Telnet in a Common Criteria environment.
