You are not able to telnet to the interface IP address of your device from a PC on the same
subnet.
What is causing the problem?
A.
Telnet is not being permitted by self policy.
B.
Telnet is not being permitted by security policy.
C.
Telnet is not allowed because it is not considered secure.
D.
Telnet is not enabled as a host-inbound service on the zone.
http://www.juniper.net/techpubs/software/junos-security/junos-security10.0/junos-security-swconfig-security/id-19734.html
Any host-inbound traffic that corresponds to a service listed under this option is allowed. For example, suppose a user whose system was directly connected to interface 1.3.1.4 in zone ABC wanted to telnet into interface 2.1.2.4 in zone ABC. For this action to be allowed, the telnet application must be configured as an allowed inbound service on both interfaces and a policy must permit the traffic transmission.