cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements
949
Views
0
Helpful
3
Replies
james.king14
Beginner

While on VPN, Anyconnect user losing time

Have report from user and others that while on VPN(AnyConnect v4.6) the enduser loses as much as 5 minutes during connection.  Checked the SYNC of the source devices with ASA and the NTP server.  Complete numerous NTP commands on the routers and ASA no problems with SYNC.  Yet users have been losing time.  Can you give me a idea where would be the next lo ation to chack or change to resolve issue.

Have enclosed configuration of webvpn on ASA 5585-X.  At most we have an average of 60 clients on at any given time.

Cleints use digital certificate (CAC) for login procedures.  

1 ACCEPTED SOLUTION

Accepted Solutions

HI

Do local users have the problem?

You say before VPN connection use Google, then once connected use your core router, how is this done? is it in the profile that is downloaded?

can the VPN users ping the core router ok?

also you can setup a capture on the ASA see if there is traffic

Capture ntp-traffic interface <interface that core router is connected to> match  UDP host < core router IP> eq 123 < Anyconnect IP address pool>

 

then do a show capture ntp-traffic

View solution in original post

3 REPLIES 3
i.hughes
Beginner

But where  is the user getting its time from the Router, ASA, or is the  time source on the Internet?

do you have split tunnel, or is all traffic for the Internet go thru the VPN, that might be an area that needs checking

Before the user gets on the VPN they are getting the NTP from Google.  Once the get on the VPN they are getting NTP from our core Router.  Which the ASA gets it's timing from the Core router.  We are not using split tunneling, due to security reasons.  All of our traffic is required to go through the VPN.  Here is the ntp information from our ASA

HI

Do local users have the problem?

You say before VPN connection use Google, then once connected use your core router, how is this done? is it in the profile that is downloaded?

can the VPN users ping the core router ok?

also you can setup a capture on the ASA see if there is traffic

Capture ntp-traffic interface <interface that core router is connected to> match  UDP host < core router IP> eq 123 < Anyconnect IP address pool>

 

then do a show capture ntp-traffic

Create
Recognize Your Peers
Content for Community-Ad