Tag Archives: port

SCCM 2012 PXE-E55: ProxyDHCP service did not reply to request on port 4011

Had this today, didn’t have any of #60, #66 or #67 DHCP options set that might have been conflicting (per Microsoft guidelines). I was able to build Hyper-V VMs at the site where the problem distribution point was, but PCs … Continue reading

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Active Directory Dynamic DNS broken by Juniper SRX firewall ALG

Last week a Juniper SRX firewall was put in to replaceĀ an olderĀ internal firewall. This week a load of Windows Servers dropped out of Active Directory DNS. The scavenging period in AD DNS was configured to be 7 days. Coincidence? I … Continue reading

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VMware ESX/ESXi issues with Broadcom 5719 quad port Gb NIC

I’ve got some new servers with Broadcom quad port 1Gb Ethernet NICs in, model 5719. Nine of the servers are running ESX 4.1 update 2 502767, one is running ESXi 5.0 update 1 623860. Two servers have experienced this issue. … Continue reading

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Which executable is listening on a port

So you know that something is listening on TCP port 1120 on your server, but how to determine what it is? You could look it up, but that list doesn’t include every piece of software, by far. And in any … Continue reading

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