Digi TX54 User Manual page 225

Serial port
v. (Optional) Enable mDNS. mDNS is a protocol that resolves host names in small
networks that do not have a DNS server.
(config serial USB_port)> service tcp mdns enable true
(config serial USB_port)>
h. Configure telnet access to this port:
i. Enable telnet access:
(config serial USB_port)> service telnet enable false
(config serial USB_port)>
ii. Set the telnet port:
(config serial USB_port)> service telnet port port
(config serial USB_port)>
iii. (Optional) Configure the access control list to limit access to the telnet connection:
TX54 User Guide
ipsec
loopback
setup
(config serial USB_port)>
Repeat this step to list additional firewall zones.
CAUTION! This connection is not authenticated or encrypted.
To limit access to specified IPv4 addresses and networks:
n
(config serial USB_port)> add service telnet acl address end
value
(config serial USB_port)>
Where value can be:
A single IP address or host name.
l
A network designation in CIDR notation, for example, 192.168.1.0/24.
l
any: No limit to IPv4 addresses that can access the telnet port.
l
Repeat this step to list additional IP addresses or networks.
To limit access to specified IPv6 addresses and networks:
n
(config serial USB_port)> add service telnet acl address6 end
value
(config serial USB_port)>
Where value can be:
Add a USB serial port
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