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180 Nokia Network Voyager for IPSO 4.0 Reference Guide
12. (Optional) Click the button of the package from which you want to upgrade under Choose
one of the following packages to upgrade from.
13. Click Apply.
14. Click Save to make your changes permanent.
To enable or disable a package
1. Click Manage Packages under Configuration > System Configuration > Packages in the tree
view.
2. Click On or Off next to the package you want to enable or disable.
3. Click Apply.
4. Click Save.
To delete a package
1. Click Manage Packages under Configuration > System Configuration > Packages in the tree
view.
2. Click the Delete Packages link.
3. Click Delete next to the package you want to delete.
4. Click Apply.
5. To make your changes permanent, click Save.
Advanced System Tuning
The configurations in this section are intended for specific purposes, and, under most
circumstances, you should not change any of the default settings.
Tuning the TCP/IP Stack
When a TCP connection is established, both ends of the connection announce their TCP
maximum segment size (MSS). The MSS setting is the value that your system advertises, and
you can change the value to tune TCP performance by allowing your system to receive the
largest possible segments without their being fragmented.
This MSS configuration is subject to the following:
It is only applicable to TCP.
It sets the TCP MSS for packets that this system generates (as well as packets it receives). If
a remote terminating node advertises an MSS higher than the MSS configured on this
system, this system will send packets that have the segment size configured with this
feature. For example, if you set this value to 512 and a remote system advertises 1024, this
system sends packets with a TCP segment size of 512.
It is only relevant to Check Point security servers or similar products that require the Nokia
appliance to terminate the connection.