HP procurve 2500 Manuale Utente
99
Enhancements in Release F.04.08
Configuring Secure Shell (SSH)
Configuring Secure Shell (SSH)
Replacing or Clearing the Public Key File.
The client public-key file remains in the switch’s flash
memory even if you erase the startup-config file, reset the switch, or reboot the switch.
■
You can replace the existing client public-key file by copying a new client public-key file into
the switch
the switch
■
You can remove the existing client public-key file by executing the
clear public-key command.
Syntax:
clear public-key
Deletes the client-public-key from the switch.
For example:
HP2512(config)# clear public-key
HP2512(config)# show ip client-public-key
show_client_public_key: cannot stat keyfile
Clearing the public key file removes file from flash memory, and does not require a write memory
command to make the change permanent.
command to make the change permanent.
Enabling Client Public-Key Authentication.
After you TFTP a client-public-key file into the
switch (described above), you can configure the switch to allow one of the following:
■
If an SSH client’s public key matches the switch’s client-public-key file, allow that client
access to the switch. If there is not a public-key match, then deny access to that client.
access to the switch. If there is not a public-key match, then deny access to that client.
■
If an SSH client’s public key does not have a match in the switch’s client-public-key file, allow
the client access if the user can enter the switch’s login (Operator) password. (If the switch
does not have an Operator password, then deny access to that client.
the client access if the user can enter the switch’s login (Operator) password. (If the switch
does not have an Operator password, then deny access to that client.
Syntax:
aaa authentication ssh login rsa none
Allows SSH client access only if the switch
detects a match between the client’s public
key and an entry in the client-public-key file
most recently copied into the switch
detects a match between the client’s public
key and an entry in the client-public-key file
most recently copied into the switch
.
aaa authentication ssh login rsa local
Allows SSH client access if there is a public
key match (see above) or if the client’s user
enters the switch’s login (Operator) password
key match (see above) or if the client’s user
enters the switch’s login (Operator) password
.
With
login rsa local configured, if the switch does not have an Operator-level password, it blocks client
public-key access to SSH clients whose private keys do not match a public key in the switch’s client-
public-key file.
public-key file.
C a u t i o n
To enable client public-key authentication to block SSH clients whose public keys are not in the
client-public-key file copied into the switch, you must configure the Login Secondary as
client-public-key file copied into the switch, you must configure the Login Secondary as
none.
Otherwise, the switch allows such clients to attempt access using the switch’s Operator password.