Linux

As some of you may know from prior posts, I have a number of external security cameras (and internal) that show up on monitors throughout the house 24/7. To keep things efficient, these camera streams are multicast feeds the monitors subscribe to. Unfortunately, every so often, I need to check the streams on my PC which is in a different VLAN. I was having to access the unicast streams and I wanted to work out getting multicast to work across vlan boundaries in OPNsense. Usually, this would be something IGMP and PIM can handle in my world, but I have no Cisco gear in my network and while pfsense has igmp and pimd, OPNsense lacks pimd, so the research began.

After reading this, look at the bug I discovered when enabling secure LDAP on UC applications [here][1]. As many of you are aware, Microsoft began the process to deprecate LDAP access into Active Directory back in March. You can read cisco’s advisory here: [https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/trouble/12_5_1/fieldNotice/cucm_b_fn-secure-ldap-mandatory-ad.html][2] Basically, this means we need to do a fairly simple swap from LDAP to LDAPS. I just completed one for a client’s CUC and CUCM and it took about 30 minutes start to finish.

I lost a lot of data during a database failure where I also discovered my backups weren’t working. TEST YOUR BACKUPS! I had something about 8192 NAT table limitation here, if that doesn’t bother you, you don’t need to proceed unless you want to. I’ll cover the three methods (I only am aware of these 3) that I tested myself. Dumb switch, EAProxy, and full bypass.

In this article, I discuss how to get root access to Cisco UC Applications, without leveraging TAC. This is NOT a supported process.

Sometimes when you’re in a client environment, you just need something you don’t have access to. That could be NTP, DNS, gateways, an internal CA, or even just an SFTP server. I encounter this all the time and my solution is almost always to simply get an IP from the client and spin up a linux server.

I’ll start off with the bad news. After the two win10 vms were running perfectly for over a year now, I was running updates on my other linux servers… some how i did pay attention and upgraded the distro of my kvm box. It pretty much ruined everything, now I get stuck at the windows logo during boot. I even tried simply reinstalling the vm guest, but when the kvm booted from the win10 iso, it would freeze at… you guessed it, the windows logo.

A little background. I have a 7 and 4 year old who like playing on the computer. Typically they play things like animaljam or nickjr games, very simple requirements, minimal hardware needs. One day, the horror that is minecraft crept its way into my home and suddenly, graphics (seriously? in minecraft, it’s a bunch of blocks…) mattered.