Sometimes there is a need to reset unknown password on Cisco switch, without loosing configuration. It is not possible on standard way, because – switch is not accessible without this password. Continue reading “Cisco Switch – Reset/Recover Password”
Tag: Cisco
VLAN – configuring
Task is:
- The network consists of 8 PC and two switches
- split one physical network in two VLAN (VLAN 2 and VLAN 3)
- ports 1-10 assign to VLAN 2 on both switches
- ports 11-20 assign to VLAN 3 on both switches
- enable communication between computers in same VLAN on different switches
Continue reading “VLAN – configuring”
Configuring a Static Default Route
This is an example how to make static routing between two networks: 192.168.0.0/24 and 192.168.1.0/24. Connection between two routers is made using serial ports Serial 0/1/0 on both routers.
Adding password for AUX / auxiliary port
For access to router / switch using aux / auxiliary port with or without modem, we can set password.
Adding password for telnet access
For access to router / switch using Telnet we use the Virtual Teletype (VTY) lines. To protect VTY port from unwanted access, we must configure password on this port. Also, if password is not configured and enabled, Telnet access will not be possible.
Adding password to console port
There is only one console port on all routers / switches, so the mark is console 0. To protect console port from unwanted access, we must configure password on this port:
Enable secret
The Enable secret is used to allow security when an administrator is going from user mode to privileged mode, same as Enable password. It is used to protect privileged mode on equipment which is not physically secured. The Enable secret is an newer, encrypted command that should be in use instead of Enable password (password it is stored in startup-config file in encrypted form).
Enable password
The Enable password is used to allow security when an administrator is going from user mode to privileged mode. It is used to protect privileged mode on equipment which is not physically secured. The Enable password is an old, non-encrypted command that should not be anymore in use (password it is stored in startup-config file non-encrypted). Continue reading “Enable password”