colemik's questions

Lets suppose that there are:

• a folder and
• a junction point or a symlink to that folder

When the original folder is moved to a new location, both the junction point and the symlink fail (point to an orphaned location). The failure of the link is not the case when a hard link to a file is created. Any hard link to a file can be moved to other folders and it will still point to the same physical file on the hard drive.

Is there a way to create a 'link' to a folder, so that when the folder is moved, the link 'tracks' the location of that folder and still works after the move operation?

If not, why is this not possible.

Can a limited broadcast contain destination MAC address other than FF:FF:FF:FF:FF:FF?

If the answer is true, could you provide an example of a protocol that uses a packet like this.

Ok, to elaborate on this a little further and to show what I think of it:

Lets suppose we are sending an IP packet that is a limited broadcast packet. A limited broadcast packet has the IP Destination field filled with: 255.255.255.255. 255.255.255.255 means that the packet is destined to '_this_' _Local_ Area Network (L2 network). 255.255.255.255 informs the software crafting a frame wrapper for the packet, that the packet is destined to _this_ L2 network. To transfer an IP packet over the LAN network, I can use multiple protocols:

depending on what type of medium I want to transfer the packet through (or what L2 protocol I want to use, if multiple L2 protocols available for a medium?).

Now, as I can't really obtain L2 address of a host 255.255.255.255 (because this host does not exist), a logical move for the software crafting the L2 wrapper would be to assign 'a default' lower level (L2) broadcast address for the frame Destination field (whatever the L2 protocol is). This would be a logical move.

I've originally asked the question because I realized that, besides of Ethernet, there are also other L2 protocols I can use to transfer the packet. So if the question was formulated like: "Can a limited broadcast packet contain information about L2 broadcast address other than MAC FF:FF:FF:FF:FF:FF ?", the answer would be: yes. Because I can use L2 protocol other than the Ethernet.

Is my thinking correct on this?

I have this simple question and really don't know the answer. Does the drawing below show one network or two networks? This is a question about the definition of a network from the OSI / TCP/IP model point of view:

• From one point of view, those are two L2 networks connected with a bridge.
• From another point of view, this is one L3 network, that can have a common L3 address space (like 10.1.1.0).

PS

If this question is too dumb, please move it to Superuser.

How to schedule a task to run every 10 minutes, from 8:00 to 15:00 on multiple days of week, i.e. on Mon,Tue,Wed?

The task I described can be defined with the GUI of Task Scheduler by using the 'Advanced' button in the 'Schedule' tab in the task Properties window. Is it possible to define the same task with one schtasks command? If yes, how would the command look like? If not, what would be the workaround.

Here is an example picture:

All the fields in the 'Advanced' window are similar to the Minute schedule type. Yet from what I've tested, it appears that I can't define two schedule types in one command (i.e. Minute + Weekly)

Lets suppose we have a computer with three NICs:

NIC_1: 172.16.1.1/24

NIC_2: 192.168.1.1/24

NIC_3: 103.55.34.32/24

We send a packet with the destination IP address being 255.255.255.255.

1) if the default gw is on the 103.55.34/24 network, will the packet be sent through NIC_3 or will the packet be sent through every NIC?

2) If we make an assumption that the whole internet is a one big network and this network network address is 0.0.0.0/0, the 255.255.255.255 address looks like a broadcast address for the whole network (for the internet), right?

3) What would be the meaning of a network address like this: 1.2.0.0/0? (is this correct and if not, why not)

I've installed Windows Server 2003 R2 and IIS role (no Active Directory role). I've setup a virtual directory named 'test' and under Security tab of the 'test' Virtual Directory I've disabled the Anonymous login and enabled Integrated Windows Authentication. The server is on the local network. What I do is I access the test/ directory on the server using the browser. Here is the log:

**IE on Server**
localhost   - works
127.0.0.1   - works, asks for password, 8 second delay
domain.com  - fails, asks for password, after 3 seconds asks for 
             a password again, the username field changes to: domain.com\username
172.28.28.100   - works, asks for password, 8 second delay

.

**Firefox on Server**
same as above
    domain.com          - the 'Remember the password' tooltip displays for
                          a fraction of a second and then the browser asks
                          for the password again

.

**IE on other LAN host**
    172.28.28.100   - works, asks for password, 8 sec delay
    domain.com  - works, asks for password, 8 sec delay
**Firefox on other LAN host**
                    - same as above, no delay

I'm obviously doing something wrong, but I don't know what is it. I've read about SPNs, but when I use setspn -L localhost, there are no SPNs displayed (I guess it's because the server is not a DC). Why can't I login on the server using Windows Integrated Authentication on domain.com?

I've installed Windows Server 2003 R2 32bit on a virtual machine. From what I've read so far, it appears that there are two versions of Exchange available for 32 bit versions of Windows Server 2003: Exchange 2003 and Exchange 2007. I'd like to install Exchange 2007 (and test it). However Exchange 2007 is described as 'for non-production environments only' and I don't really know what that means. Does it mean that it is somehow crippled / not tested / has fewer features that Exchange 2007 64bit?

Or is is possible to perform migration to 64bit after installing Exchange 2007 32bit? I want to set a stable Exchange environment and play with it (with my mobile phone) for some time. Should I rather install Exchange 2003 or Exchange 2007?

Regards.

when do local GPOs apply if a computer is a part of a domain? What would be an example scenario when local GPOs would be relevant for a computer that is a part of a domain? Can I somehow 'use' local GPOs even if the computer is a part of the domain?

I ask because I want to understand the difference between local GPOs and domain GPOs and how they differ / how they are interrelated.

Regards.

I've recently read a Microsoft Technet article on how Windows Firewall works. The author of the article uses concepts like 'solicited network traffic' and 'unsolicited network traffic' for a machine. I guess I don't fully understand the concept of those.

In relation to TCP protocol, is the solicited traffic a traffic that was initiated by a local machine?

In relation to UDP protocol, is there even sth like a solicited/unsolicited traffic or is all traffic unsolicited?

What about other protocols? (+can Windows Firewall filter those other protocols)

I've found the following iptables chart: How does the packet traverse iptables tables when the packet is sent from one local process to another local process?

Regards.

Why is Microsoft Loopback interface called _loopback_ inteface?

RFC3330 states that a loopback interface is an interface with an IP address in the 127.0.0.0/8 address range.

Yet, when I enter the 127.x.x.x address in Microsoft Loopback TCP/IP settings, Windows returns an error.

What is its purpose?

I've downloaded Microsoft Network Monitor 3.4 and it appears that I can't disable IP address to hostname DNS resolution. Is there a way to disable the DNS resolution so i.e. I'd always see: 173.194.65.104 instead of google.com in the Destination column?

Regards.

I've downloaded NM 3.4 from microsoft.com and it appears that the software doesn't capture traffic on MS TCP Loopback interface. When I ping 127.0.0.1 address, NM shows no packets flowing. I've tried both promiscuous / standard NIC mode with no luck. The only way I know so far to capture loopback traffic on Windows machines is to use RawCap.

I'm using Windows XP SP3.

Regards.

Lets suppose I define an IP address reservation in Windows Server 2003 DHCP Server. Is it mandatory to define an exclusion of this IP address also?

IP Scope: 192.168.1.1 to 192.168.1.5
IP Reservation: 192.168.1.2
IP Exclusion: 192.168.1.2 <-- is this entry mandatory?

What will happen if the entry is not present? Is there a 20% chance the IP address will be assigned to some other computer?