User`s guide

Chapter 4 Configuring Your Library
Configuring Library Security
Scalar i6000 User’s Guide 224
• ICMP — To prevent external attempts to discover the library by
pinging it (by means of Internet Control Message Protocol
[ICMP] Echo packets), select Disable. Using this setting can
prevent denial-of-service (DoS) attacks, which can flood the
library with pings and cause loss of network connectivity and
services.
• SSH — To prevent Secure Shell access to the library, select
Disable. To allow SSH to access the library, select Enable.
• SSHv1—To prevent Secure Shell version 1 protocol from running
on the library, select Disable. To allow SSHv1 to run on the
library, select Enable. SSHv1 is enabled by default. If you choose
to disable SSHv1, only SSHv2 will connect to the library.
• HTTP—To prevent access to the library using the web browser
client, select Disable. If you choose to disable HTTP, access to the
library is limited to the library’s operator panel or the LMC
application. To permit access to the library GUI using a web
browser client, select Enable.
If Dynamic Host Configuration Protocol (DHCP) is enabled for your
library on the Network Configuration dialog box (Setup→ Network
Configuration), you also should enable ICMP. This ensures that the
DHCP server can determine whether the IP address that is assigned
to the MCB is still valid. (ICMP is enabled by default.)
3 If you want to apply the changes, but you do not want to close the
dialog box, click Apply. Otherwise, click OK to apply the changes
and close the dialog box.