How do I flush the DNS cache on Win, Mac, and Linux computers?
I'd never heard of anycast until a few seconds ago when I read "What are some cool or useful server/networking tricks?".
The wikipedia "Anycast" article on it is quite formal and doesn't really evoke a mental picture of how it would be used.
Can someone explain in a few informal sentences what "anycast" is, how you configure it (just in a general sense), and what its benefits are (what does it make easier)?
Let's say you have an office with 20 free range iMacs. One day they buy an Xserve to host network home folders.
What steps would you perform to move their local accounts, and local home folders, to the Xserve?
How do you handle file permissions? What "gotchas" (I hate that word too) would you look out for (any common plists that get broken? any problems with keychain? etc)?
The first several digits of a MAC address (Ethernet ID) are specific to its manufacturer/model. I won't ask what's the best way to look these up since it's subjective... but I'd love to know if any here has found a particularly efficient resource to do this.
What's the difference between a switch, a router, and a modem?
What speed, number of pins (physical size) are PCIe x1 x4 x8 and x16?
Normally I would google to find a photo showing the various types of PCI Express cards and their max bandwidth. Now that serverfault exists, I thought I'd lazily check if anyone here already has a good concise photo they could post as an answer.
EDIT: Thanks, vartec. I also found a nice diagram via Google:
I'm not as proficient at configuring DNS as I would like. What are some common DNS design schemes?
EDIT: Gah, it's hard to explain what i mean! I'm interested in learning how to classify/configure various styles of networks (eg: is there a term for networks that have intranet records they don't transfer vs networks that keep entirely public records... is there a terms for a network that uses dynamic dns... is there a term for networks that use load-balancing...)?
I have a volume with files on it that will need to be copied between Mac, Linux, and Windows machines. I want to ensure that there are no surprises with:
- file size
- filename length
- filename character set
- number of nested directories
Am I correct to assume that anything (in the above list) that is legal in FAT32 will be also be legal in NTFS, EXT3, and HFS+?
If not, is there a script/utility I can run, without actually copying the files to all of these types of volumes, that will print a list potential problems?
Now that I have started the Software Update service on my Leopard Server, how do I change my client Macs to check for updates on it?
What legal issues should you research as a sysadmin to avoid you, or your employer, being accused of negligence, or of violating privacy, etc?
While laws vary from country to country and state to state, it could still be enlightening if you have an example of a law which you, or someone you know, has broken without realizing it.
I know an LDAP search base suffix generally matches the directory server's host name. In other words, I know if the host name is od.foobar.com, I should use the search base suffix: dc=od,dc=foorbar,dc=com
It bothers me to not understand why I'm doing this. Could someone provide some background and explain precisely what I'm doing?
I always found it odd that Mac OS X's Connect to server menu lets you read and write to every protocol it supports except FTP. Is it just one of those mysteries, or have they ever discussed why this design choice was made?
Why do you have to create a directory before you can mount a share to it?
Eg: I've never understood why mkdir is needed here:
mkdir /Volumes/foo
mount -t afp afp://username:[email protected]/foo /Volumes/foo
Out of curiosity, is anyone here using Google Mini or Google Search Appliance to provide intranet search? Was it easy to set up? What kind of prices do they charge (ball park figure, I'm sure it depends on the customer)?
Is there any solution out there to turn a Mac into a true multi-user thin client server?
I'd like to set up a few cheap PCs with access to a couple accounts using something like VNC, but it isn't economical to buy a new server for each user or a new license for virtualized OS X Server for each user.
I'm fully aware that OS X Server lets you set up users with "network home folders," and I know there's also VNC built into Mac OS X. Neither of these fit the bill (the former requires a thick client, and the latter is single-user only)
UPDATE: yay, Lion! http://www.9to5mac.com/54102/10-7-lion-allows-multi-user-remote-computing
Someone please explain what Spanning Tree Protocol (STP) actually does in layman's terms. I know it can cause problems with some network gear, but that's the extent of my knowledge.
If you inherited an already configured server which is running Exchange Server 2003: where would you locate the settings on the server that you would need to configure Exchange on iPhone 2.0?
Can someone explain very briefly the way Blackberry's email functions. I'm not looking for nuts and bolts, just answers to some very basic questions:
- Does a Blackberry check with an Exchange server directly, or does it always/ever use an intermediate server?
- If it uses an intermediate server, is that server managed by RIM, or the customer's mobile network operator?
- To configure Exchange email on a Blackberry, do you enter the settings on the phone itself, or via a web interface?
- What other email protocols can Blackberry devices use, and do they (also?) use an intermediate server?
Per the Windows and Linux threads, what commands do you find most useful in Mac OS X Server (or Client)?
Using ".local" as your hostname breaks Kerberos (and other services) in Mac OS Server 10.5 Advanced because the server will only do Bonjour lookups instead of checking with the DNS Server(s). There is an old Apple knowledgebase article (from OS 10.3) that says adding the string "local" to the "Search Domains" section of the Network System Preference Pane will force your computer to lookup via a DNS server instead of just Bonjour...
...which sounds like it would also allow you to use "server.local" as your hostname - can anyone confirm this is the case, or is there some other drawback with this workaround?