The Netskope parser can parse Netskope log messages.

The messages of these devices often do not completely comply with the syslog RFCs, making them difficult to parse. The netskope-parser() of syslog-ng OSE solves this problem, and can separate these log messages to name-value pairs, extracting also the Cisco-specific values, for example, the mnemonic. For details on using value-pairs in syslog-ng OSE see Structuring macros, metadata, and other value-pairs.

The parser can parse messages in the following format:

<PRI>{JSON-formatted-log-message}

For example:

<134>{“count”: 1, “supporting_data”: {“data_values”: [“x.x.x.x”, “user@domain.com”], “data_type”: “user”}, “organization_unit”: “domain/domain/Domain Users/Enterprise Users”, “severity_level”: 2, “category”: null, “timestamp”: 1547421943, “_insertion_epoch_timestamp”: 1547421943, “ccl”: “unknown”, “user”: “user@domain.com”, “audit_log_event”: “Login Successful”, “ur_normalized”: “user@domain.com”, “_id”: “936289”, “type”: “admin_audit_logs”, “appcategory”: null}

If you find a message that the netskope-parser() cannot properly parse, contact Support, so we can improve the parser.

The syslog-ng OSE application sets the PROGRAM field to Netskope.

By default, the Netskope-specific fields are extracted into name-value pairs prefixed with .netskope. For example, the organization_unit in the previous message becomes ${.netskope.organization_unit}. You can change the prefix using the prefix option of the parser.

Declaration

@version: 3.38
@include "scl.conf"
log {
    source { network(flags(no-parse)); };
    parser { netskope-parser(); };
    destination { ... };
};

Note that you have to disable message parsing in the source using the flags(no-parse) option for the parser to work.

The netskope-parser() is actually a reusable configuration snippet configured to parse Netskope messages. For details on using or writing such configuration snippets, see Reusing configuration blocks. You can find the source of the Checkpoint configuration snippet on GitHub.

prefix()

Synopsis: prefix()

Description: Insert a prefix before the name part of the parsed name-value pairs to help further processing. For example:

  • To insert the my-parsed-data. prefix, use the prefix(my-parsed-data.) option.

  • To refer to a particular data that has a prefix, use the prefix in the name of the macro, for example, ${my-parsed-data.name}.

  • If you forward the parsed messages using the IETF-syslog protocol, you can insert all the parsed data into the SDATA part of the message using the prefix(.SDATA.my-parsed-data.) option.

Names starting with a dot (for example, .example) are reserved for use by syslog-ng OSE. If you use such a macro name as the name of a parsed value, it will attempt to replace the original value of the macro (note that only soft macros can be overwritten, see Hard versus soft macros. To avoid such problems, use a prefix when naming the parsed values, for example, prefix(my-parsed-data.)

By default, netskope-parser() uses the .netskope. prefix. To modify it, use the following format:

parser {
    netskope-parser(prefix("myprefix."));
};

Updated: