pfSense Routing Loop Fun

I recently upgraded my pfSense appliance to the latest code release (currently 2.4.4-RELEASE (amd64)) and since doing so I’ve had a few strange occasions where my devices are unable to access the Internet or more precisely certain ports are working while others do not. Let me explain further and then explain what I’ve done which … Read morepfSense Routing Loop Fun

Specified operation failed with LDAP error: 00000005: SecErr: DSID-03152612, problem 4003 (INSUFF_ACCESS_RIGHTS)

I’ve been working with Dsacls (Directory Services Access Control Lists) recently as part of a project to enabled permissions on a custom app which will synchronise an HR system with Active Directory. To ensure safe testing we cloned a DC and the application server which will run the code into an isolated network which could … Read moreSpecified operation failed with LDAP error: 00000005: SecErr: DSID-03152612, problem 4003 (INSUFF_ACCESS_RIGHTS)

vCenter OVF Deployment Fails Access-Control-Allow-Origin Header Error

*** VMware Update *** This issue has been reported to engineering. They are currently working on it and have scheduled the fix for 6.5 u2 which has been scheduled for release in Q2 We’ve been having some fun deploying OVF files to our VMware vCenter appliance environment lately. Historically this has worked just fine but … Read morevCenter OVF Deployment Fails Access-Control-Allow-Origin Header Error

Kali Linux Update Fails – Key Outdated

If like me you have Kali Linux installations you may have come across a slight problem recently whereby the public key had expired resulting in an error when attempting to update. You likely received something similar to the example below when attempting an apt update –

I must admit I don’t update Kali as … Read moreKali Linux Update Fails – Key Outdated

HPE CLX Virtual Machine Protection Fails

Recently a colleague was attempting to configure the cluster extension protection (CLX) which is required by our Active/Active HPE 3PAR storage setup. Our Microsoft Failover Clusters are stretched over geographically separate sites and the Cluster Share Volumes (CSV) are spread over the 3PAR storage arrays in each site. We use the CLX software to manage … Read moreHPE CLX Virtual Machine Protection Fails

Trend Micro ScanMail Virtual Analyzer Connection Troubleshooting

I’ve been working on our Trend Micro Deep Discovery Analyzer (DDAN in Trend parlance) and today I finally finished off the virtual image which it will use to sandbox suspicious files/URLs. Having finished that work I figured I’d take a look at integrating our Trend Micro ScanMail for Exchange (SMEX) systems so that e-mails can … Read moreTrend Micro ScanMail Virtual Analyzer Connection Troubleshooting

Unexpected Large Page File Troubleshooting

This week one of my colleagues has been performing updates on our hypervisor hosts including those running Hyper-V. During this work we received alerts from our monitoring system to indicate two of the hosts had essentially run out of disk space, obviously a little worrying. We stopped the update process while troubleshooting was carried out … Read moreUnexpected Large Page File Troubleshooting

Error Lookup With net helpmsg Command

Microsoft provide a convenient command line tool which allows you to lookup error codes and be provided with the text description relating to that code. It may be something you’ve not come across before so this quick post will hopefully be useful. If you are familiar with the net commands (e.g net user, net localgroup, … Read moreError Lookup With net helpmsg Command

HPE 3PAR Remote Copy Volumes Both Read Only

I recently ‘enjoyed’ working on an issue where a 3PAR remote copy group issue resulted in both virtual volumes entering a read-only state. I’ve seen a similar problem where both copies go into a read-write state which is probably more worrying when it happens. Let’s take a look at the problem, the data I had … Read moreHPE 3PAR Remote Copy Volumes Both Read Only

Trend Micro OfficeScan IIS 503.2 Error Work Around

One of my Trend Micro OfficeScan servers recently started to experience problems resulting in IIS 503.2 error messages being displayed. This was rather poor timing as I was actually in the process of migrating OfficeScan clients to this new server running version 12 or XG as they are calling it. After some work with Trend … Read moreTrend Micro OfficeScan IIS 503.2 Error Work Around