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New Member

VPN monitoring

Hi all

I have CISCO equipment set to allow VPN access from the Internet. I wish to know when users log on the internal network etc.

Is there a way how I can do this? maybe via e-mail notification etc?

Thanks a lot

5 REPLIES
New Member

VPN monitoring

Are you using Cisco Device for VPN termination? If you are which cisco device you are using?

New Member

VPN monitoring

The devices are these:

Cisco Router 2901

Cisco Switch 2960s

New Member

VPN monitoring

So are you terminating your VPN on 2901?

New Member

Re: VPN monitoring

Precisely - I want to know when users log on by means of an e-mail notification. Ideally even when they disconnect too.

New Member

Re: VPN monitoring

You need to enable logging for this then you can use EEM for Sending the login alert to you mailbox:

You can configure it like this:

1.) Enable logging

2.) you must identify the log message. e.g while if you connect to the VPN server via VPN client, the log message is:

JAN 27 13:28:13.227: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access3, changed state to up

If you want the username also with mail then you must identify the log message which contain the userID.

3.) you must define the email variables:

Ciscozine(config)#event manager environment _email_to your-to-mail@domain.com
Ciscozine(config)#event manager environment _email_server your.mail.server
Ciscozine(config)#event manager environment _email_from your-from-mail@domain.com

After that, it is possible define the ‘applet’, the ‘event’ and the ‘action’:

4.) Send email when you are connected to the router via IPSEC session

Ciscozine(config)#event manager applet CheckVPN
Ciscozine(config-applet)#event syslog pattern "LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access.*up"
Ciscozine(config-applet)#action 1.0 cli command "enable"
Ciscozine(config-applet)#action 1.5 cli command "sh crypto ipsec sa | i local crypto"
Ciscozine(config-applet)#action 2.0 mail server "$_email_server" to "$_email_to" from "$_email_from" subject "$_event_pub_time: VPN User connected" body "Connection:\n$_cli_result"
Ciscozine(config-applet)#action 2.5 syslog priority 5 msg "VPN UP - Mail Sent"

Remember: In EEM 3.0 for Cisco IOS Release 12.4(22)T, the server-address argument includes an optional username and password along with the fully qualified domain name of the e-mail server to be   used to forward the e-mail. The e-mail server name can be in any one of   the following template formats:

  • username:password@host
  • username@host
  • host

Remember: EEM has pre-defined variables:

  • $_event_type: The event type that triggered the event.
  • $_event_pub_time: The time at which the event type was published. Environmental Variables Available for SNMP Events
  • $_syslog_msg: The syslog message that caused the event to be published.

Hope this will help. Please rate the post if you find it helpfull.

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