DevNet Sandbox: SSL connection failure...

blazaro — Tue, 04 Jun 2019 09:45:36 GMT

Good day everyone,

Recently completed the setup of my Linux (Ubuntu) workstation as a development environment and received the 2nd email containing the VPN credentials for a reserved DevNet Sandbox (https://devnetsb13.cisco.com/).

When connecting to the sandbox using OpenConnect via CLI command as depicted on the guide (https://learninglabs.cisco.com/modules/dev-setup/dev-ubuntu/step/7), the client will connect to the sandbox but eventually times out without reaching the prompt asking for the VPN credentials.

ben@laptop:~$ sudo openconnect -b devnetsb13.cisco.com

[sudo] password for ben:

POST https://devnetsb13.cisco.com/

Connected to 64.103.26.57:443

SSL negotiation with devnetsb13.cisco.com

SSL connection failure: The operation timed out

Failed to open HTTPS connection to devnetsb13.cisco.com

Failed to obtain WebVPN cookie

ben@laptop:~$

Checked the laptop's Internet connectivity to the sandbox via ping:

ben@laptop:~$ ping devnetsb13.cisco.com

PING devnetsb13.cisco.com (64.103.26.57) 56(84) bytes of data.

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=1 ttl=238 time=288 ms

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=2 ttl=238 time=283 ms

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=3 ttl=238 time=283 ms

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=4 ttl=238 time=291 ms

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=5 ttl=238 time=285 ms

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=6 ttl=238 time=303 ms

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=7 ttl=238 time=283 ms

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=8 ttl=238 time=285 ms

64 bytes from devnetsb13.cisco.com (64.103.26.57): icmp_seq=9 ttl=238 time=283 ms

--- devnetsb13.cisco.com ping statistics ---

10 packets transmitted, 9 received, 10% packet loss, time 9011ms

rtt min/avg/max/mdev = 283.015/287.646/303.461/6.147 ms

ben@laptop:~$

Could the root cause is due to a slow Internet connection to the sandbox?

Best regards,

Ben

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DevNet Sandbox: SSL connection failure...