- #Windows update says it needs to install kb2538242 how to
- #Windows update says it needs to install kb2538242 software
Other somewhat surprising limitations, relative to its cousin FTP, include a lack of authentication and the ability to delete or rename files. Admittedly, there may have been improvements since its original design but the RFC also states that, in essence, the only errors it can pick up are noticing if the wrong user is specified, if a file that’s requested doesn’t exist, and other access violations. Now that you’re firmly sold on using this somewhat-deprecated protocol, let’s have a think about what it might be used for. If you’re creating new machines from images, then TFTP is perfect for bootstrapping a new server with predefined config and a sprinkling of packages.
#Windows update says it needs to install kb2538242 software
It might also be used during boot time to pull the latest version of a file from a local server so that all clients are guaranteed to be up-to-date with a certain software package. You may also want to use TFTP - as several vendors do - for firmware updates. Why choose TFTP over FTP or even HTTP, you may ask? Simply because even if you don’t have a TFTP server already up and running, it’s relatively easy to quickly get started. Also the number of parameters required to retrieve a file (and therefore the number of things that can go wrong) is very limited. It tends to work or it doesn’t there’s little middle ground. This functional simplicity is definitely a bonus. If you’ve ever maintained switches or routers, then you’ve likely used TFTP either to back up or restore config files or possibly to perform a firmware upgrade. Many of the major vendors still prefer this method, possibly because there’s a feeling of comfort (in relation to security) when moving files around inside a LAN relative to doing so across the Internet. On a network device, for example, you might encounter a transaction similar to that seen in Listing 1: Router# copy running-config tftp: Address or name of remote host ? 10.10.10.10 Destination filename ? router_config_backup_v1 !!!! 3151 bytes copied in 1.21 secs (2,604 bytes/sec) Router#
Listing 1: The type of transaction that you may see when backing up a network device’s config via TFTP.Īs you can see in this listing, the exclamation marks provide a progress bar of sorts and each one acts as an indicator that a successful transfer of ten packets.
#Windows update says it needs to install kb2538242 how to
Let’s look at how to get a TFTP server up and running. In the olden days, inetd ruled the roost and was responsible for letting many local services out onto the network so that they could communicate with other users and machines.