Cisco Security Email Gateway Configuration and Security Best Practices

Configuring a Cisco Security Email Gateway is a crucial step in protecting your organization's email communications from spam, phishing, and other types of cyber threats.

To start, ensure that your Cisco Security Email Gateway is properly configured to scan incoming and outgoing emails for malware and spam. This includes setting up the gateway to use a reputable anti-virus and anti-spam engine.

Regularly updating your Cisco Security Email Gateway with the latest security patches and firmware is essential to prevent exploitation of known vulnerabilities. This should be done as soon as new updates are available.

Implementing a robust authentication mechanism, such as two-factor authentication, can help prevent unauthorized access to your email gateway. This adds an extra layer of security to prevent attackers from gaining access to your email communications.

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To configure Cisco Secure Email Gateway, start by selecting System administration > Log subscriptions in the Cisco Secure Email Gateway console.

You'll then be able to add a new log subscription by following the steps outlined in the console.

To save your configuration changes, click Submit.

To configure the Google SecOps forwarder to ingest Cisco Secure Email Gateway logs, first go to SIEM Settings > Forwarders.

Click Add new forwarder and enter a unique name for the forwarder in the Forwarder Name field.

Click Submit to add the forwarder and the Add collector configuration window will appear.

In this window, select Cisco Email Security as the Log type and Syslog as the Collector type.

To configure a secure email gateway, start by accessing the Cisco Secure Email Gateway console. Select System administration > Log subscriptions.

From there, you can add a log subscription to track important email activity. To do this, click on the "New log subscription" button.

In the New log subscription window, you'll need to save your configuration changes. To do this, click the "Submit" button.

To configure the Google SecOps forwarder to ingest Cisco Secure Email Gateway, start by going to SIEM Settings>Forwarders.

Click Add new forwarder and enter a unique name for the forwarder in the Forwarder Name field.

Click Submit to add the forwarder and the Add collector configuration window will appear.

In the Collector name field, type a name and select Cisco Email Security as the Log type.

Select Syslog as the Collector type and configure the mandatory input parameters.

Here's a step-by-step guide:

If you encounter issues when you create forwarders, contact Google SecOps support.

The parser we're using handles both structured and unstructured logs from Cisco Email Security, making it a versatile tool for data analysis.

It normalizes diverse log formats into a unified format called UDM by leveraging grok patterns and key-value extraction.

This parser also performs data enrichment, such as converting timestamps and handling repeated messages.

Cisco ESA fields are mapped to UDM using conditional logic based on the product_event field.

This allows for a more accurate and comprehensive understanding of email security data.

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Cisco Secure Email Threat Defense achieves the highest level of email threat protection, earning an AAA rating from SE Labs research. This is due to its sophisticated AI detectors that outsmart even the most advanced email threats.

Frost and Sullivan recognizes Secure Email Threat Defense for its incredible market growth, advances in AI, and global expansion, making it a leader in email security.

Using AI and Large Language Models, Secure Email Threat Defense drives enhanced protection against advanced email threats, providing a robust defense against cyber attacks.

Acting quickly is key to ensuring maximum threat protection. Using rapid message remediation directly in Email Threat Defense empowers your team to do just that.

You can remediate faster by using Email Threat Defense or Cisco XDR. This allows your team to act quickly and easily to help ensure maximum threat protection.

Rapid message remediation helps your team respond swiftly to potential threats. This is especially important in today's fast-paced digital landscape where threats can emerge and spread quickly.

By using rapid message remediation, you can help minimize the impact of a potential threat. This is a critical step in protecting your organization's digital assets and reputation.

For another approach, see: Important Security Message

Cisco recently issued several security notices to address vulnerabilities in their Secure Email and Web Manager, Secure Email Gateway, and Secure Web Appliance products.

One of the recent security notices was issued on February 7, 2025, and addresses multiple vulnerabilities in these products.

On February 5, 2025, two separate security notices were issued, one addressing a cross-site scripting vulnerability and another addressing an SNMP polling information disclosure vulnerability in the same products.

A security notice was also issued on November 6, 2024, to address a stored cross-site scripting vulnerability in the Secure Email and Web Manager, Secure Email Gateway, and Secure Web Appliance products.

Here is a list of recent security notices issued by Cisco: