Tcp/Udp Port Closure - HP ProCurve J8766A Release Note

Enhancements
Release L.10.20 Enhancements
ProCurve(config)# show run
Running configuration:
; J4905A Configuration Editor; Created on release #L.10.20
hostname "ProCurve"
snmp-server mib hpSwitchAuthMIB excluded
ip default-gateway 10.10.24.55
snmp-server community "public" Operator
vlan 1
name "DEFAULT_VLAN"
untagged 1-26
ip address 10.10.24.100 255.255.255.0
exit
password manager
Figure 25. Using the show run Command to View the Current Authentication MIB Access State

TCP/UDP Port Closure

In earlier software releases, certain UDP ports were always open. Beginning with software release
L.10.20, all TCP/UDP ports on the 3400cl switches will remain closed until the associated services
are enabled on the switch.
The following ports and services are affected by this change:
Port Service
69 TFTP
161 SNMP
520 RIP
1507 Stacking (SNMP)
To open any of these ports, the respective services must first be enabled on the switch. For
information on how to enable/disable these services, refer to the following command listings. For
details on each service, refer to the latest version of the switch's software documentation available
on the ProCurve Networking Web site.
Enabling/Disabling TFTP
The TFTP server and client can be enabled and/or disabled independently.
Syntax: [no] tftp < client | server >
54
Indicates that SNMP access
to the authentication
configuration MIB
(hpSwitchAuth) is disabled.