Email Security Appliance (ESA)

Key facts

• Requires vendor product by source configuration
• Legacy BSD Format default port 514

Links

Ref	Link
Splunk Add-on	https://splunkbase.splunk.com/app/1761/
Product Manual	https://www.cisco.com/c/en/us/td/docs/security/esa/esa15-5-1/user_guide/b_ESA_Admin_Guide_15-5-1.pdf

ESA Log Configuration

If feasible for you, you can use following log configuration on the ESA. The log name configured on the ESA can then be parsed easily by sc4s.

ESA Log Name	ESA Log Type
sc4s_gui_logs	HTTP Logs
sc4s_mail_logs	IronPort Text Mail Logs
sc4s_amp	AMP Engine Logs
sc4s_audit_logs	Audit Logs
sc4s_antispam	Anti-Spam Logs
sc4s_content_scanner	Content Scanner Logs
sc4s_error_logs	IronPort Text Mail Logs (Loglevel: Critical)
sc4s_system_logs	System Logs
sc4s_euq_logs	System Logs
sc4s_service_logs	System Logs
sc4s_reportd_logs	System Logs
sc4s_sntpd_logs	System Logs
sc4s_smartlicense	System Logs
sc4s_updater_logs	Error Logs

Sourcetypes

sourcetype	notes
cisco:esa:http	The HTTP logs of Cisco IronPort ESA record information about the secure HTTP services enabled on the interface.
cisco:esa:textmail	Text mail logs of Cisco IronPort ESA record email information and status.
cisco:esa:amp	Advanced Malware Protection (AMP) of Cisco IronPort ESA records malware detection and blocking, continuous analysis, and retrospective alerting details.
cisco:esa:authentication	These logs record successful user logins and unsuccessful login attempts.
cisco:esa:cef	The Consolidated Event Logs summarizes each message event in a single log line.
cisco:esa:error_logs	Error logs of Cisco IronPort ESA records error that occurred for ESA configurations or internal issues.
cisco:esa:content_scanner	Content scanner logs of Cisco IronPort ESA scans messages that contain password-protected attachments for
malicious activity and data privacy.
cisco:esa:antispam	Anti-spam logs record the status of the anti-spam scanning feature of your system, including the status on receiving updates of the latest anti-spam rules. Also, any logs related to the Context Adaptive Scanning Engine are logged here.
cisco:esa:system_logs	System logs record the boot information, virtual appliance license expiration alerts, DNS status information, and comments users typed using commit command.

Sourcetype and Index Configuration

key	sourcetype	index	notes
cisco_esa	cisco:esa:http	email	None
cisco_esa	cisco:esa:textmail	email	None
cisco_esa	cisco:esa:amp	email	None
cisco_esa	cisco:esa:authentication	email	None
cisco_esa	cisco:esa:cef	email	None
cisco_esa	cisco:esa:error_logs	email	None
cisco_esa	cisco:esa:content_scanner	email	None
cisco_esa	cisco:esa:antispam	email	None
cisco_esa	cisco:esa:system_logs	email	None

Parser Configuration

#/opt/sc4s/local/config/app-parsers/app-vps-cisco_esa.conf
#File name provided is a suggestion it must be globally unique

application app-vps-test-cisco_esa[sc4s-vps] {
 filter { 
        host("^esa-")
    }; 
    parser { 
        p_set_netsource_fields(
            vendor('cisco')
            product('esa')
        ); 
    };   
};