Hebrew U. Link HUCA -HelpDesk

 

Tango VPN - troubleshooting

Choose a category:


Problems with accessing e-journals



Problems with Internet Explorer

Choose a category:

Can not access the page Integrity scan is stuck

Integrity check in loop

Integrity scan
results


Can not access the page

Follow our instructions if you receive an error page right after Tango's first window:

You need to add https://tango.huji.ac.il to trusted sites:

Step

  • Load Internet Explorer.

  • Go to Tools --> Internet Options...

Step

  • Click the Security tab.

  • Click the Trusted sites icon.

  • Click the Sites... button.

Step

  • Type: https://tango.huji.ac.il.

  • Click Add.

  • Click OK in both windows.
  • Type again tango.huji.ac.il in the browser address bar.



Integrity scan is stuck


Uninstall Vpn TANGO, and try to connect again:

Step

 

  • Load Internet Explorer.


  • Go to Tools --> Internet Options...

Step

 

  • Click the General tab.


  • Click Delete Files...

Step

 

  • Mark the option: Delete all offline content.


  • Click OK

Step

 

  • Click Settings....

Step

 

  • Click View Objects...

Step

 

  • Choose and delete the file: ICSScanner Class.

Step

 

  • Return to the Internet Options window.


  • Click Delete Coockies...


  • Click OK and close Internet Explorer.

Step

 

  • Click the main Start of the Windows

  • Click Settings -> Control Panel (if you don't have Settings click Control Panel)

Step

 

  • Double click on Add/Remove programs

Step

 

  • Select Check Point SSL Network Extender from the list.

  • Click Remove.



Integrity scan in loop

There is a bug that was reported already but not fixed yet. If the current Windows user is a Hebrew name, the integrity check just repeats itself endlessly.

Till the problem is solved, download Firefox and use it instead of Internet Explorer while using Tango.

Integrity scan results

Once integrity checking is complete, you might receive a window with warnings of potential security problems in your computer (No updated antivirus, viruses, spyware, warms, etc.).

Fix the detected problems according to our instructions:

  1. The following error indictaes that either an Anti-Virus software is not installed on your computer or that the Anti-Virus definitions are not updated.
    • In case you do not have an Anti-Virus software you will need to install one (if you are eligible for connecting to HUJI from home, you can download McAfee from our site).
    • If your definitions are out of date you can download and run from our site (Only Symantec and McAfee are available here).






Problems with Network Applications

Choose a category:

Errors Google Desktop Java Runtime Environment SSH Personal Firewalls


Errors:

Can not access the page Request has different IP...

Can not access the page

When you click the Connect button in Network Applications you receive the error: Download failed.


Solution:

Remove temp files from your directory according to the instructions:

Step

 

  • Right-click Window's Start menu.

  • Click Explor

Step

 

  • Type %temp% under Address.

  • Press the Return key on your keyboard.

Step

 

  • Delete the following files:
    • extender_install.log
    • jar_cashe....tmp
    • regtmp.txt
    • TLB...tmp
    Note: ... means any number

  • Get back to your browser and try to connect again to Network Applications.

 

Step

 

  • Click the main Start of the Windows

  • Click Settings -> Control Panel (if you don't have Settings click Control Panel)

Step

 

  • Double click on Add/Remove programs

Step

 

  • Select Check Point SSL Network Extender from the list.

  • Click Remove.



Request has different IP...

After connecting succesfully with Network Applications, you receive the following error:
Request has different IP than original session IP

Disconnect Tango AND your Internet connection - the problem will be solved after reconnecting.
Or disconnect Tango and wait 15 min.

 


Google Desktop


If Google Desktop is installed in your computer, Tango will not be able to estblish a connection with Network Application. Instead it will try to connect and eventually you will receive the following error message:

tango-google

Solution:

Uninstall Google Desktop: Go to Start-->Programs-->Google Desktop. Choose Uninstall Google Desktop.



Java Runtime Environment


In some cases if Java runtime Envirornment is installed, Trying to connect with Network Applications will not connect or even the browser (both Internet Explorer and Firefox family) will quit.

Solution:

Uninstall Java Runtime Environment (according to the instructions below), and reinstall it.

 

Step

  • Click Start

  • Click Settings -> Control Panel (if you don't have Settings click Control Panel)

Step

 

  • Double click on Add/Remove programs

Step

 

  • Choose your version of JavaRuntime Environment

  • Click Remove

  • Restart your computer


SSH


Please note that only SSH2 works over Network Applications Connection.

You may download a compliant client (putty) from our site.




Personal Firewalls


Third-party personal firewalls, such as Norton Internet Security, may cause problems in Network Applications connection.

Possible errors:

  • SSL Network Extender is taking too long to connect. Try to connect again.
  • Cannot establish connection to SSL Network Extender gateway. Try to reconnect.

Solution:

You can open up for full incoming outgoing access the following applications in your firewall:

  • c:\Program Files\CheckPoint\SSL Network Extender\slimsvc.exe
  • c:\Program Files\CheckPoint\SSL Network Extender\vna_utils.exe

If network applications still don't connect - disable the firewall for Tango's session.




Problems with accessing e-journals

Choose a category:

Using the Web option Proxies


Using the Web option

If you tried to access e-journals via the Web option you might have problems with accessing some e-journals.
Use the Network Applications option instead, click the Connect button and after connection is established open a new window in the browser and work as usual.

Use the web option ONLY if you have no choice, i.e. Windows98.




Proxies settings

If you are connected successfully and you can't reach sites with your browser (The problem repeats itself especially when connected behind a router) - try to change your proxy settings according to our guides.

Last updated: 26/10/2017