[SOLVED] enterprise IT

I wish I had discovered how to do this years ago.  Need to determine the admin IP of a firewall switch or other network device on the same switch that you are plugged into?, here is a slick way: First determine the MAC Organizationally Unique Identifier (OUI), which is the first half of the MAC address.  There are various databases online to determine this by vendor/device.  Once you determine it issue the commands below (my commands have mimosa MAC as an example) Windows / DOS: arp -a Read more [...]

Comcast is now replacing many of the failed Netgear routers with the Cisco DPC3939.  The DPC3939 can be difficult to work with in terms of enabling inbound traffic.  Firewalls are of course dependent upon inbound traffic flow in order to perform NAT and traffic filtering functions. In order to allow inbound traffic the following checkbox must be checked: Advanced > Disable all rules and allow all inbound traffic through Note: you may also need to disable the firewall in the Cisco Read more [...]

According to Apple: "OS X keeps a local cache of resolved DNS queries for a time defined by the DNS server, but sometimes it may be necessary to reset the cache immediately and re-query a DNS server. For example, you might do this after an entry on the server is changed or a new entry is added." Below are steps for clearing the Cache in Yosemite (10.10.x) and older.  If you have High Sierra (10.13.x) or newer, use this link to clear the Mac OS DNS Cache in High Sierra and newer. To flush the DNS Read more [...]