![]() I hope this tip was helpful and obviously feel free to drop any question in the comments. ![]() Then the IDS sourcetype stanza in the nf will do its thing and problem solved ! the forwarder itself,listening on another port. The basic ideas is to have those IDS event, after being assigned with the proper sourcetype, go through the syslog routing where the server is. Perhaps that is just a typo in the Question, but not in the actual. So here is the solution I've found to create a loopback that will make the IDS events go back through the pipeline and have the time zone properly adjusted. Is anyone else picking up on the longitude1 config in the nf section above It has lat, which will probably not get a very good longitude. Just adding the new IDS sourcetype stanza in nf wouldn't work because normally splunk goes once through the pipeline and wouldn't get back to the Typing pipeline after first changing the sourcetype key to the IDS key. However in this case, to make things worse, the events included a unique IDS log with a different time zone than my locale and without any identification in the time stamp so the splunk time interpreter took the time as it is without adjusting it to UTC. A fairly standard procedure up to this point. Recently I had to improve the data quality of a source that is feeding my splunk instance with various security events over a single port.Ī major part of the process I'm usually following is breaking the events into different source types using regex. Conf20 session was already recorded, you might want to consider the below as an addendum since it is inline with the session topic and the motivation to spend hours finding a solution stem from the same problem statement: What to do if you have very little or no control over the data source ? If I try to parse the same records by triggering on, that works.Since my. Create two unique transforms in nf-one for each regex-and then connect them in the corresponding field extraction stanza in nf. Here are my requirements: If any events contains the string SECEVENT it needs to be routed to an index called Security.If I try to parse the timestamp by triggering on, the timestamps aren't parsed. To complicate things, I need multiple transforms to make sure all events get to the appropriate index. I know the sourcetype is being rewritten because I get it in search results. Do nf and nf need to be created in SPLUNKHOME/etc/deployment-apps/YOURAPP/local or can it be created in the deployment server GUI to. # Which implies to me that props isn't taking advantage of the sourcetypeĪnd nf is correctly setting the sourcetype like this: ![]() TRANSFORMS-set_sourcetype_514 = set_sourcetype_f5, set_sourcetype_cisco The Cisco Security Suite app doesn't seem to cover routers/switches. I must say, I'm kind of surprised that extractors for Cisco aren't cooked in or easily available. In order to extract data from these lines after they've been tagged as sourcetype 'cisco'?Īny thoughts appreciated. Which references this in nf: Ĭan I then have something like this further down in nf? ĮXTRACT-ip_proto,src_address,src_port,etc = "list 101 denied (?+) (?d+.d+.d+.d+)((?d+)) -> (?d+.d+.d+.d+)((?d+))" TRANSFORMS-set_sourcetype_cisco = set_sourcetype_cisco Can a sourcetype be assigned using nf and then (as the new sourcetype) be operated on within nf? ![]() I'd like to break some of these out and do some specific extraction. In transform extractions, the regular expression is in nf and the field extraction is in nf. For configuring a field transform in Splunk Web, see manage field transforms. This section shows you how to configure field transforms in nf. We have various 514/udp sources that all get mashed in under sourcetype "syslog". You can find nf and nf in SPLUNKHOME/etc/system/local. ![]()
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