Archive for the ‘Networking and Security’ Category

Outlook 2007 Certificate Security Alert

If you are getting a certificate security alert with the following error when you open Outlook 2007.
“the name on the security certificate is invalid or does not match the name of the site”
 This is because the name on the server and the name on the certificate is mismatched.  To resolve this, you will need to [...]

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How to Configure Virtual Servers Failover for Citrix Netscaler?

Below are instructions on configuring Virtual Servers failover in a Netscaler device
1. Login to the Configuration page for the Netscaler
2. Find the Virtual Servers and Services node and expand it
3. Click on Services and choose “ADD”
4. Type in the Service Name (e.g. NODE1) and Server IP address for the first Node and click “Create” to [...]

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How to enable Wake on LAN WOL

To enable Wake on LAN or for short WOL or PME, you will need to make sure that your hardware supports it.  There are two places you will need to check.
1. BIOS
2. Network Adapter
Once you are sure that your hardware supports WOL, you will need to enable it.
To enable WOL or PME in the BIOS, [...]

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How to connect a modem into the AUX or CON port?

Here are the steps in setting up a US Robotics Modem to work on a Cisco AUX or CON port.
1. Connect a RJ45 to DB25 adapter to the modem and label it as modem.
RJ45 to DB25 Adapter Pinout

RJ45
DB25

1 Blue
4

2 Orange
20

3 Black
2

4 Red
7

5 Green
7

6 Yellow
3

7 Brown
8

8 White
5

2. Connect a Roll-Over cable from the RJ45-DB25 [...]

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Can’t find server name for address x.x.x.x: Non-existent domain

If you ran into this error with your DNS server, then most likely you forgot to setup the PRT entry for the DNS server.
“Can’t find server name for address w.x.y.z: Non-existent domain”
Once I added back the PRT to the DNS server, the error went away and DNS isn’t timing out no more.
VN:F [1.0.8_357]please wait…Rating: 0.0/10 [...]

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Is NetFlow supported on Cisco Switches?

Unfortunately, Netflow is only supported on L2 devices (e.g. Routers).  Switches such as Catalyst 2900, 3500, and 3700 series are all L3 devices. Therefore, Netflow isn’t supported.
VN:F [1.0.8_357]please wait…Rating: 0.0/10 (0 votes cast)

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How to add multiple dns entries with netsh?

If you want to add multiple dns entries using the netsh utility, you can do it by using the following commands.
netsh interface ip add dns “Local Area Connection” 10.0.0.53
netsh interface ip add dns “Local Area Connection” 10.0.0.54 index=2

To remove a dns entry, you can use the following command
netsh interface ip delete dns “Local Area Connection” [...]

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Change Static IPs to DHCP Remotely

How to change static IP address to DHCP remotely?
1. Download the PsExec program from Microsoft
Link
2. Extract and install the PSEXEC program
3. Run the PsExec with the following commands
e.g.
psexec \\servername -u username -p password netsh interface ip set dns “Local Area Connection” dhcp
psexec \\servername -u username -p password netsh interface ip set address “Local Area Connection” [...]

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The application operette $2dhifi has attempted to open a connection to a location inside the firewall and outside the firewall which is not allowed by your IT policy

Error:
The application operette $2dhifi has attempted to open a connection to a location inside the firewall and outside the firewall which is not allowed by your IT policy
If you are getting the following error message when you are trying to install the Opera Mini Browser into your Blackberry, then most likely the firewall is blocking [...]

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How to enable Wake on LAN?

Wake-On-LAN is a way to turn on you computer remotely. It can be in the same LAN or through the Internet.
To have Wake-On-Lan, your computer needs to support it.  You can check your systems bios settings to see if you  have the Wake On Lan option or not.  If so, you just simply enable it and [...]

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