How to Configure a VLAN Interface As a Source IP Address For Logging

Most websites log your IP address for various reasons, such as to understand your viewing habits and boost sales. This is entirely legal but there are privacy risks associated with logging your IP address. Luckily, there are tools available to hide your IP address or create a fake one. You can use these tools to prevent your IP from being tracked and avoid having it listed as an infringing IP address.

Configure a VLAN interface as source IP address for logging

To configure a VLAN interface as a source IP address for logging, you need to set a VLAN interface’s IP address as the source address. ThisĀ will ensure that packets arrive on the correct interface. However, you should be aware that some VLAN interfaces may not be configured for IP.

The IP address is used for receiving and sending packets. Before you configure the IP address, you must shut down the interface. Once you’ve done that, you’ll be able to view the IP address of the interface.

Configure the Log Translation Fields setting to log both the original IP address and the NAT-translated IP address

NAT is a protocol that maps IP addresses from one network to another. It works by changing the header of IP packets while they are in transit, which improves security and reduces the number of IP addresses required to support each network. NAT is typically implemented in remote-access environments.

To configure NAT translation, first choose the type of NAT pool. Then, enter the base IP address range of the original source network. You can also specify a port/range as the global default port for source NAT pools.

Indicate UDP traffic (Ports 1024) as source IP address for logging

Splunk Enterprise supports monitoring over UDP, but it is recommended that you use TCP instead. This is because UDP doesn’t guarantee network packet delivery. You can install Splunk Connect for Syslog to use this protocol, but you must make sure you have access to TCP network ports and run the application as a root user. You can also use a universal forwarder to monitor network traffic.

If you want to specify a particular set of UDP ports, Source-Connect Pro offers this feature. Make sure that the router is configured to forward these ports. You can specify custom ports between 1024 and 65535.

Create a rule from a log entry

To create a rule, you can specify one or more log entries and define conditions for each one. The conditions will depend on the log source. For example, an incoming SNMP trap message needs to meet the Varbind element with name and OID criteria in order to trigger an alert action.

The rules can be atomic or composite. Atomic rules evaluate one event while composite rules evaluate multiple events and their frequency, repetition, and correlation. You need to include commas at the end of each atomic rule to separate them.