Category: Uncategorized

The Cisco VPN Client on Windows 7 with Air Cards (AT&T and Verizon)

Symptoms: Customer reports that their IPSec Client VPN solution works fine on their Windows XP machines but not their Windows 7 machines.

Potential Cause: With Windows 7, Microsoft introduced the Mobile Broadband (MB) driver model that more tightly integrates wireless modems and WWAN devices within Windows.  The changes were fairly significant and included an update to the Windows NDIS (Network Driver Interface Specification) to version 6.2.  Any network application that performs packet capture, filtering, or injection at the MAC layer (such as VPN clients) will likely have compatibility issues with the mobile broadband stack in Windows 7.  As of publication, many IPSec VPN Clients have not been updated to support NDIS 6.2.

Potential Solution: The company PC administrator can update the drivers via the Citrix website. 

ftp://files.citrix.com/dneupdate.msi for 32-bit

ftp://files.citrix.com/dneupdate64.msi for 64-bit

More Information:

Cisco Systems VPN Client Version 5.0.07.x utilizes NDIS intermediate drivers based on NDIS 5.0 that are incompatible with the WWAN adapter type released with Windows 7. The third party tool used by the Cisco VPN Client that acts as the NDIS IM driver is Citrix Deterministic Network Enhancer (DNE).

Citrix has released an update to DNE that is compatible with the Windows 7 Mobile Broadband driver model WWAN adapter (see download link above).  Installing this update resolves the compatibility issues seen with the Cisco VPN Client.  Other VPN clients that utilize DNE for their NDIS intermediate drivers may benefit from this update as well.

 Reference – http://www.citrix.com/go/lp/dne.html

Fix RHN Certificate Errors

Symptoms

You attempt to install Red Hat updates using yum, and you receive an error similar to the following:

up2date_client.up2dateErrors.SSLCertificateVerifyFailedError: The certificate is expired. Please ensure you have the correct certificate and your system time is correct.

 Fix

Remove the expired certificate and replace it with the new certificate:

rm /usr/share/rhn/RHNS-CA-CERT
wget -P /usr/share/rhn http://f.cl.ly/items/1B19031O2E0m1k3E2n3u/RHNS-CA-CERT

Update the Red Hat Network packages:

yum -y update rhn*

Cause

Red Hat’s old certificate expired in August 2013, so any server that hadn’t installed updated since the new certificate was provided in March 2010 won’t be able to validate the new packages. For more information, see this article on Red Hat’s KB.

To prevent issues like this from occurring in the future, please install Red Hat updates at least two times per year.

Setting Up a Local Attached Printer (USB)

Setting Up a Local Printer

Local printing allows you to attach a printer to a users PC, install it on their PC and allow the user to print from Eclipse as well as windows. This is not a network printer.

1. Physically attach the printer to your PC’S LPT or USB port and install the printer on your PC.

2. Login to Eclipse.

3. Select Terminal Setup from the F2-System/System Files… menu.

4. Locate your Terminal ID and place the cursor on that line. If there is not one you will need to setup a Terminal Id. This can be done by accessing the Terminal Setup screen in Eclipse. F2/F/T.

Once your ID is created, Highlight it and select ALT/S to get the Local Printer Menu

 

Figure 1 Local Printer Menu.

5. Under the Local Printer field hit the F10 key and select the PCL5 driver with correct amount of trays for a laser printer or Printronix for a Dot matrix printer.

6. Under the Form Loaded field hit the F10 key and select the form you desire.

  • ANY* is the most common form loaded on a local printer and means that

everything you print from Eclipse will print to your local printer even if you select another Eclipse printer..

7. Press Esc to exit the Local Printer Assignment screen and save your settings.

8. Access your Eterm Configuration screen by selecting Configure and then Communications from the grey menu bar in Eterm.

 

Figure 2: Configure/Communications screen.

9. Move the cursor to the ID field and type in your Terminal ID.

Note: It is important to type your User ID exactly as it appears on the Terminal Setup screen, including capitalization where appropriate.

10. Click on OK to save your changes.

11. Access the Configure/Printing menu in eterm and check off Selected Printer and then click the Select Printer tab.

This will give you the option to select the installed printer from your computers installed printers. Once selected click on OK.

Install Clam AntiVirus for Linux

Note: This article is provided for informational purposes only. If you choose to install anti-virus software, our standard 3rd party software policy applies: you are welcome to install and operate 3rd party software on the Eclipse server, but Eclipse will not certify or provide technical support for any of these software products, so you must obtain technical support from the vendor or elsewhere.

Installation

Download the ClamAV packages:

yum install clamav

Install anti-virus updates:

freshclam

Scan

To initiate an on-demand scan:

clamscan --recursive --log=/tmp/clamscan.log /

To filter the results:

egrep -v "OK|Symbolic|Empty|Excluded|Permission" clamscan.log

You should see ~46 infected test files under the clamscan directory

Resources

http://sial.org/howto/clamav/
http://www.linuxmail.info/how-to-install-clam-antivirus-centos-5/
http://dag.wieers.com/rpm/packages/clamav/