Configuring Session Limits And Timeouts - NETGEAR STM150 Appliance Reference Manual

ProSecure Web/Email Security Threat Management (STM) Appliance Reference Manual
Table 3-1. Network Settings (continued)
Setting Description (or Subfield and Description)
MTU Settings
Maximum The maximum transmission unit (MTU) is the largest physical packet size that a
Transmission network can transmit. Packets that are larger than the MTU value are divided into
Unit smaller packets before they are sent, an action that prolongs the transmission
process. For most Ethernet networks the MTU value is 1500 Bytes, which is the
default setting.
Note: NETGEAR recommends synchronizing the STM's MTU setting with that of
your network to prevent delays in transmission.
3. Click Apply to save your settings. Changing any of the settings in the Management Interface
Settings section or Interface Speed & Duplex Settings section of the screen causes the STM to
restart. Changing only the MTU setting does not cause the STM to restart but does cause
services such as HTTP and SMTP to restart. If you click Reset, the STM restarts to restore the
default network settings.

Configuring Session Limits and Timeouts

The Session Limits screen allows you to specify the total number of sessions per user (that is, per
IP address or single source machine) that are allowed on the STM. Session limiting is disabled by
default. When session limiting is enabled, you can specify the maximum number of sessions per
user either as an absolute number or as a percentage of the STM's total connection capacity per
user, which is 10000 sessions. (You cannot change the total connection capacity per user.) If a user
exceeds the number of allocated sessions, packets might be dropped.
Note: Some protocols such as FTP and RSTP create two sessions per connection.
To configure session limits and timeouts:
1. Select Global Settings > Network Settings from the menu. The Network Settings submenu
tabs appear with the Network Settings screen in view.
Performing Network and System Management
v1.0, September 2009
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