<div dir="ltr">The AnyConnect client does captive portal detection but you will only see it if you are using the many options available via the xml config file. <div><br></div><div>The options in the client itself are very limited.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 28 Jun 2019 at 10:58, Beeson, Ayden <<a href="mailto:abeeson@csu.edu.au">abeeson@csu.edu.au</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">We are a Telstra 4G / Anyconnect SSL VPN shop and I haven't heard of any complaints for this issue. Are you using Anyconnect, or just using the clientless VPN?<br>
<br>
Are they 100% using the 4G connection and not accidentally on hotel / public Wi-Fi that might have a captive portal on it? I didn't think Anyconnect even had a portal detection feature, I've never seen one on any versions I have run.<br>
<br>
There might be a portal check feature if it does have one that is failing to reach your ASA/VPN termination gear, even though the actual connection is fine. I'm not aware of specifics around a mechanism if one exists so that’s speculation at best, but maybe ICMP reachability etc?<br>
<br>
Cheers,<br>
Ayden<br>
<br>
<br>
On 26/6/19, 1:18 pm, "AusNOG on behalf of Drikus Brits" <<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.net</a> on behalf of <a href="mailto:drikusinaus@gmail.com" target="_blank">drikusinaus@gmail.com</a>> wrote:<br>
<br>
Howdy,<br>
<br>
Have anybody else picked up weird issues regarding SSLVPN connections.<br>
We've had a bunch of customers complaining about getting popups<br>
claiming that the user is behind a captive portal and needs to<br>
authenticate/resolve connectivity issues first before the SSLVPN<br>
software can connect.<br>
<br>
a bit spread thing trying to locate the exact reason, but seems it is<br>
very erratic with customers scattered.<br>
<br>
cheers,<br>
<br>
Drikus<br>
Brennan IT<br>
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