Specifications

Modifying System Parameters
Equalizer Installation and Administration Guide 45
The modify system parameters screen displays the following flags that affects Equalizer’s
operation:
Figure23 Themodifysystemparametersscreen(flags)
• enable email enables and disables event triggered email on the Equalizer; see “Configuring
Custom Event Handling” on page 114, in Chapter 7.
• advanced enables display of advanced parameters and flags by default on all menus for this
cluster (i.e., any screen that has an advanced check box will have the check box enabled, and
all advanced parameters and flags are displayed when the screen is opened).
• enable outbound NAT is described under “Enabling Outbound NAT” on page 53.
• passive FTP translation is described under “Enabling Passive FTP Connections” on page
53.
• pedantic agent applies only when clusters use server agents. When you check this box,
Equalizer will treat a server as down when it can probe a server but receives no response from
the server’s agent. See Appendix A, ”Using Server Agents”.
• ICMP probe enables probing servers using a mix of L4, L7, and ICMP echo probes.
• ICMP drop redirects tells Equalizer to drop (i.e., ignore) incoming ICMP redirect messages.
• no plot disables the recording of plotting data.
• ignore case applies to L7 clusters and is the global setting to ignore case in match
expressions. You can override this value per cluster and per match rule. See Chapter 8.
• no outbound RST applies to L4 clusters only and causes Equalizer to disable forwarding of
untranslated TCP RST (reset) packets. You may want to enable this flag if other network
devices (e.g., firewalls, routers, etc.) are logging unexpected source IP messages for the real
IPs of servers behind Equalizer (and not the cluster IP). When Equalizer manages a cluster
connection, it keeps a record of the connection so it can translate the source IP in a server
response before forwarding it. If a client connected to a server IP directly, or if the server
sends a RST after Equalizer has already removed the connection record, the RST packet will