Girl Geekette

http://support.microsoft.com/kb/928233/en-us

Windows Vista cannot obtain an IP Address from certain routers or from certain non-Microsoft DHCP servers

Consider the following scenario:

• You connect a Windows Vista-based computer to a network.
• A router or other device that is configured as a Dynamic Host Configuration Protocol (DHCP) server is configured on the network.
• The router or the other device does not support the DHCP BROADCAST flag.

In this scenario, Windows Vista cannot obtain an IP address.

Requirements for Internet Hosts — Communication Layers (RFC 1122, R. Braden, Oct 89):

paragraph 3.2.1.7:

The IP layer MUST provide a means for the transport layer to set the TTL field of every datagram that is sent. When a fixed TTL value is used, it MUST be configurable. The current suggested value will be published in the “Assigned Numbers”  RFC.

and

A fixed value must be at least big enough for the Internet “diameter,” i.e., the longest possible path. A reasonable value is about twice the diameter, to allow for continued Internet growth.

Assigned Numbers (RFC 1700, J. Reynolds, J. Postel, October 1994):
page 64:

IP TIME TO LIVE PARAMETER

The current recommended default time to live (TTL) for the
Internet Protocol (IP) [45,105] is 64.

Want to know more? http://en.wikipedia.org/wiki/Onion_routing

Windows Key & R
Type: cmd
Press ENTER

You will get a command window. In that window
Type: getmac
You will get a screen similar to:

getmac

The IP address of your computer can be set from the command prompt by running the following commands at an administrative level prompt:

netsh interface ip set address name="Local Area Connection" static 111.222.333.444 255.255.255.0 111.222.333.1 1

Local Area Connection is the name of the adapter you want to modify. In single NIC systems it is normally called Local Area Connection.

111.222.333.444 is the IP address you want to set.
255.255.255.0 is the subnet mask.
111.222.333.1 is the gateway.
1 is the gateway metric. You can leave this as 1 for almost all cases.

If you want to enable DHCP you can run:

netsh interface ip set address name="Local Area Connection" dhcp

There are two commands for DNS since administrators typically configure a primary and secondary DNS server.

For the primary DNS run:

netsh interface ip set dns name="Local Area Connection" static 69.27.200.15

For the secondary run:

netsh interface ip add dns name="Local Area Connection" 69.27.200.16 index=2

If you want to configure the computer to use DNS from DHCP run:

netsh interface ip set dnsservers name="Local Area Connection" source=dhcp

When you are finished with all of your IP and DNS changes run ipconfig -all to review the new settings.

ICMP TYPE NUMBERS
(last updated 2010-04-22)

Registries included below:
- ICMP Type Numbers
- Code Fields
- ICMP Extension Object Classes

Registry Name: ICMP Type Numbers
Reference: [RFC2939]
Registration Procedures: IESG Approval or Standards Action

Note:
The Internet Control Message Protocol (ICMP) has many messages that
are identified by a “type” field.

Registry:
Type Name Reference
—- ————————- ———
0 Echo Reply [RFC792]
1 Unassigned [JBP]
2 Unassigned [JBP]
3 Destination Unreachable [RFC792]
4 Source Quench [RFC792]
5 Redirect [RFC792]
6 Alternate Host Address [JBP]
7 Unassigned [JBP]
8 Echo [RFC792]
9 Router Advertisement [RFC1256]
10 Router Solicitation [RFC1256]
11 Time Exceeded [RFC792]
12 Parameter Problem [RFC792]
13 Timestamp [RFC792]
14 Timestamp Reply [RFC792]
15 Information Request [RFC792]
16 Information Reply [RFC792]
17 Address Mask Request [RFC950]
18 Address Mask Reply [RFC950]
19 Reserved (for Security) [Solo]
20-29 Reserved (for Robustness Experiment) [ZSu]
30 Traceroute [RFC1393]
31 Datagram Conversion Error [RFC1475]
32 Mobile Host Redirect [David Johnson]
33 IPv6 Where-Are-You [Bill Simpson]
34 IPv6 I-Am-Here [Bill Simpson]
35 Mobile Registration Request [Bill Simpson]
36 Mobile Registration Reply [Bill Simpson]
37 Domain Name Request [RFC1788]
38 Domain Name Reply [RFC1788]
39 SKIP [Markson]
40 Photuris [RFC2521]
41 ICMP messages utilized by experimental [RFC4065]
mobility protocols such as Seamoby
42-255 Reserved [JBP]

Registry Name: Code Fields
Reference: [RFC2939]
Registration Procedures: IESG Approval or Standards Action

Note:
Many of these ICMP types have a “code” field. Here we list the types
again with their assigned code fields.