So I've been using centminmod as a base for Xenforo as I work to migrate my vBulletin forum. So far so good, everything running as planned, until I installed Elasticsearch and tried to get searches to work. I couldn't figure out the problem, but I noticed the server was hitting swap, so I powered down the VM, changed the memory from 32G to 64G (yeah, I've got 23G as innodb cache), booted back up, and now I can't reach the web server. I can access it from the command line using Lynx, but remote servers both on the local subnet and out on the Internet are just getting timeouts. Networking seems to be working - Yum installations work, for instance, and I can ssh in without problem. CSF firewall being turned off didn't make a difference. Downgrading the memory back to 32G didn't make a difference. Connections to the domain I host and the IP address of the centminmod machine itself both work via lynx, but not from remote servers. I'm not sure what to do at this point. I'm certain it's something simple, but my brain isn't working well enough, apparently. Thoughts?