Networking
This afternoon we received several reports all at once that the internet was down. Interestingly we were able to reach client locations, all SNMP monitoring looked healthy and no outages were present. We did however notice that bandwidth utilization had dropped to a trickle, so something was amiss! Eventually we
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The following post was submitted by Jon Worley in response to a server stuck in a boot loop due to pending updates failing to install: This is a summary of what I did to avoid manually removing 28 different packages using the long form name of them without access to
Fortinet
In order to resolve a failed relationship between a FortiGate and FortiManager we needed to remove the FortiGate. In FortiManager this worked fine, however in FortiGate the relationship still persisted (under Security Fabric -> Settings -> Central Management). If we attempted to disable the Central Management toggle we
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We had an issue where a clients' Outlook connectivity stopped working and they were continuously prompted for credentials. Mysteriously OWA and ActiveSync were fine. In the Security logs on the Exchange server we saw a lot of the following: Source: Microsoft Windows security auditing. Event ID: 4625 Failure Information:
Cisco
We changed a customer from PRI to SIP trunk and after the change, the Exchange UM stopped working for calls coming in from the outside. We found the following error in the logs: %VOICE_IEC-3-GW: CCAPI: Internal Error (Software Error): IEC=1.1.180.1.13.112 on callID 78
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Regarding IT Projects for Exchange Server, a transport rule can apply actions to messages based on the recipient address. If you however attempt to use a Distribution List (group) the rule will not save, giving you the following error message: SentTo predicate does not allow distribution groups. 'My Group&
Cisco
On the pre 4000 series ISRs you would use the regular Cisco escape sequence to exit a service module -- CTRL-SHIFT-6 followed by X. In the 44xx and 43xx series routers the switch modules do not respond to the regular escape sequence from the console. Instead, to escape back to
Cisco
The Cisco ASA firewall can run as virtual host for multiple virtual ASA's known as contexts. We recently ran into an issue where a memory leak made one context inoperable. Rather than reload the entire ASA and take out the other contexts we wanted to only restart the
Networking
Here are a list of things to troubleshoot when a Ruckus AP is not registering to a Virtual SmartZone (VSZ) cloud controller. 1. Ensure that the public IP address of the site where the AP resides is permitted through the firewall protecting the VSZ. 2. Check that the AP has
Cisco
Had an issue where I was not able to successfully upgrade the IOS firmware on a Cisco 4351 router. This model of router runs IOS-XE and has some slight differences in feature set compared to legacy IOS. For example "ip dns server" was not an available command in
Infrastructure
In my first post on showing the client IP addresses through a Barracuda ADC load balancer, I showed how to get Direct Server Return to work for clients on the same network by adding loopback interfaces on the back-end servers. In this post I will discuss a problem when using
Infrastructure
In order to see the client origination IP address on the real back-end servers when a Barracuda ADC load balancer is used there are two options. The first is to use layer 4 load balancing on the service type. The other option is to use a layer 7 proxy service