Device > Server Profiles > NetFlow
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Device > Server Profiles > NetFlow
Palo Alto Networks firewalls can export statistics about
the IP traffic on their interfaces as NetFlow fields to a NetFlow
collector. The NetFlow collector is a server you use to analyze
network traffic for security, administration, accounting and troubleshooting.
All Palo Alto Networks firewalls support NetFlow Version 9. The
firewalls support only unidirectional NetFlow, not bidirectional.
The firewalls perform NetFlow processing on all IP packets on the
interfaces and do not support sampled NetFlow. You can export NetFlow
records for Layer 3, Layer 2, virtual wire, tap, VLAN, loopback,
and tunnel interfaces. For aggregate Ethernet interfaces, you can
export records for the aggregate group but not for individual interfaces within
the group. The firewalls support standard and enterprise (PAN-OS
specific) NetFlow templates, which NetFlow collectors use to decipher
the NetFlow fields. The firewalls select a template based on the
type of exported data: IPv4 or IPv6 traffic, with or without NAT,
and with standard or enterprise-specific fields.
To configure NetFlow exports, Add a
NetFlow server profile to specify which NetFlow servers will receive
the exported data and to specify export parameters. After you assign
the profile to an interface (see Network
> Interfaces), the firewall exports NetFlow data for all
traffic on that interface to the specified servers.
Netflow Settings | Description |
---|---|
Name | Enter a name for the Netflow server profile
(up to 31 characters). The name is case-sensitive and must be unique.
Use only letters, numbers, spaces, hyphens, and underscores. |
Template Refresh Rate | The firewall periodically refreshes NetFlow
templates to re-evaluate which one to use (in case the type of exported
data changes) and to apply any changes to the fields in the selected template.
Specify the rate at which the firewall refreshes NetFlow templates
in Minutes (range is 1 to 3,600; default
is 30) and Packets (exported records—range
is 1 to 600; default is 20), according to the requirements of your
NetFlow collector. The firewall refreshes the template after either
threshold is passed. The required refresh rate depends on the NetFlow
collector. If you add multiple NetFlow collectors to the server
profile, use the value of the collector with the fastest refresh
rate. |
Active Timeout | Specify the frequency (in minutes) at which
the firewall exports data records for each session (range is 1 to
60; default is 5). Set the frequency based on how often you want
the NetFlow collector to update traffic statistics. |
PAN-OS Field Types | Export PAN-OS specific fields for App-ID
and the User-ID service in Netflow records. |
Servers | |
Name | Specify a name to identify the server (up
to 31 characters). The name is case-sensitive and must be unique.
Use only letters, numbers, spaces, hyphens, and underscores. |
Server | Specify the hostname or IP address of the
server. You can add a maximum of two servers per profile. |
Port | Specify the port number for server access
(default is 2055). |