Author Archives: notesbytom

About notesbytom

Keeping technology notes on WordPress.com to free up my mind to solve new problems rather than figuring out the same ones repeatedly :-).

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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Windows Tomcat Manager GUI non-Admin

To workaround UAC limitations, the Apache Tomcat Monitor GUI app (tomcat8w/tomcatNw) has an embedded manifest to force elevation (requestedExecutionLevel = requireAdministrator). You can view the manifest settings in the Apache Commons Daemon Procrun prunmgr source code. Because the manifest is … Continue reading

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PowerShell Foreach-Object Modify Pipeline Objects

You can modify pipeline objects on-the-fly using Foreach-Object. The syntax is a little strange because you need to put the object back on the pipeline if desired for additional processing. WordPress.com code-sanitization is eating my $_ so trying Gist, BLAH. … Continue reading

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JIRA Export Import Project Issues

This is a topic that seems to be poorly documented – exporting and importing projects between JIRA instances. There is an entire system backup, but the documentation makes it clear that restoring individual projects from the system backup is not … Continue reading

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Exchange Offline Address Book Troubleshooting

The Exchange Offline Address Book (OAB) for Outlook clients can be a difficult beast to troubleshoot. When it’s not working correctly, Outlook clients may fail to report an error and continue to synchronize stale Global Address List records. Here are … Continue reading

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Cisco ASA Command Line Basics

This post is for people who are new to the Cisco ASA command line, or seasoned network administrators like myself who need to review or brush up on the command line basics for the ASA console. Instead of using my … Continue reading

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AES-GCM on Cisco ASA

This is a request for comments to clarify network security proper usage of new AES-GCM cryptography functionality on the Cisco ASA platform. Please leave a comment if you can provide some insight to help readers better informed on how and … Continue reading

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SSSD-AD TGT failed verification

Users of RHEL 7 and CentOS 7 on Windows Active Directory networks are likely enjoying the benefits of using the SSSD-AD domain-join client module along with the Realmd tool which facilitates proper management of SSSD client configuration (a very complex … Continue reading

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Get Rid of virbr0

In RHEL 7.x and CentOS 7.x you may see an odd extra network interface listed as “virbr0” (virtual bridge zero). This is provided as a default way to share the host physical network with private guest virtual machines. Unfortunately this … Continue reading

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