Installing Link-Security™ Software on the DPU

Use this information to install required tools and build the kernel driver on the SoC.

Make sure that you have:

Installed a Napatech DPU in a server. See Installing a DPU.
Programmed the DPU with an appropriate FPGA image. See Link-Security™ Software FPGA Images.
Remote SSH access to the SoC on the DPU via the management port or the USB Port. See DN-1385.
Placed the ipu_tools-<version>.tar.gz package in the /opt/ directory, where version is the version identifier of the corresponding package.
Disabled the firewall on the SoC.
```
systemctl disable --now firewalld
```

Note: The following prompt is used to indicate which part of the system to run the provided commands on.

On the SoC, set the following network parameter to avoid the ARP flux issue.
```
echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
```
This configuration enables responding to the ARP requests only if the target IP is a local address that is configured on the incoming interface.
On the SoC, install required tools.
```
soc# dnf install net-tools
soc# dnf install nginx sysstat
```
- nginx: The test script copies the nginx configuration files from the test server to the SoC to run nginx with the relevant configuration.
- sar: Used for logging. The sar tool is included in the sysstat package.

Build the kernel driver.

soc# cd /opt
soc# tar zxvf ipu_tools-<version>.tar.gz
soc# cd ipu_tools/src/
soc# cd ipu_mngmnt_tools/software/csc_lek-0.0.0.5/driver/kmod
soc# make

where version is the version identifier of the corresponding package.