Monthly Archives: October 2017

Verify Server Certificate with OpenSSL

Here’s a quick note for checking the contents of a TLS (SSL) server certificate with the OpenSSL command-line tools. Comments: echo “Q” causes the openssl s_client to disconnect (quit) immediately after verifying connectivity. Replace your hostname and port for “your.fqdn.com:443”. … Continue reading

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Cisco ASA Troubleshoot IKE Policy

Notes for troubleshooting Cisco ASA IKE Policy – there must be a match between site-to-site / lan-to-lan (L2L) endpoint IPSec Peers for the ISAKMP (IKE) session to be established. Traditionally this was known of IPSec Phase One, but as of … Continue reading

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Set Windows Firewall Zone to Domain

The Windows native host-based firewall is zone-based. This would be fine if you could set the zone for a given interface, but Microsoft has designed it to automatically determine the zone for a network interface using their Network Location Awareness … Continue reading

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