Tag: Flow

Configuring IPFIX on the SRX Branch Series

Posted on by Clay Haynes in IPFIX, Operations, SRX

Junos 20.1r1 was released recently, and with it came a rather exciting feature – the ability to configure IPFIX flow export on the SRX Branch series! This update also includes the ability to support flow record exports in chassis clusters as well. This is a great feature to support traffic analysis through a myriad of tools, and even support basic Denial of Service Attack detection. With the addition of IPFIX we can also generate flow data for IPv6 traffic which previously was not supported on the SRX. Without further ado, let’s configure IPFIX!

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SRX – Configuring a DHCP Server

Posted on by Clay Haynes in Uncategorized

It’s been a while since I wrote up a new post, so I thought I would come back with a nice post about the changes in configuring DHCP Servers on the SRX’s. Since Junos 12.x a new DHCP process came out to help fix some long standing issues with the existing feature. In this post I will discuss the old configuration, some of the problems I would regularly encounter, and the configuration of the new DHCP process.

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Packet Mode and Selective Packet Services

Posted on by Clay Haynes in Routing, SRX

Packet mode enables a SRX firewall to act strictly as a router, forwarding packets from a source to a destination without tracking sessions. This is useful for an engineer in certain situations such as high throughput applications that do not need full firewall functionality, or asymmetric traffic flows. We can also enable this mode on interesting traffic which is called Selective Packet Services. More details on Selective Packet Services is available on the following PDF as well as the rest of this post.

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