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Cisco CyberSecurity

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We currently have a Cisco 1841 configured with an L2L VPN to an ASA 5550.  All appears to be working, but sometimes on the router I issue the "sh crypto ipsec sa" command and I see the association, but if I then issue "crypto isakmp sa" it shows no a...

Hi,I just configured my asa5510 8.2.3 to get an iphone connected in a ipsec vpn.The tunnel vpn is correctly established but when the iphone goes in safe mode (after 1 minute) the tunnel goes down.Is there any particular settings to keep the tunnel up...

acleri by Level 1
  • 2087 Views
  • 2 replies
  • 0 Helpful votes

Hello all,I'm having an extremely vexing issue.  I have a CallManager server setup on one site (Site A) and IP Phones that connect to it via a site-to-site IPSec VPN tunnel on Site B.  The WAN link on Site B (Cable ISP with Static IP) can be a bit un...

fieryhail by Level 1
  • 615 Views
  • 1 replies
  • 0 Helpful votes

I have been trying to setup a basic L2TP from Windows XP/2003 to an ASA. The basics are IKE:3DES/SHA and 3DES/MD5 Transport. I have a site to site that works just fine. But the remote access does not permit any traffic. I get this in the console log:...

seanwaite by Level 1
  • 1031 Views
  • 1 replies
  • 0 Helpful votes

Hi all,I have 2811 installed in our test environment to test sslvpn. Everything is working great except CIFS. I can't browse my file server. When I click on the network file icon on SSLVPN page I get the following error:The following error occurred w...

I am confused as to the methods available to implement Dial Backup on an 1811 ISR. My router's WAN is connected to a cable modem via FA0.In reading the 1811 software configuration guide (chapter 13, page 13-5), I have viewed a table listing "Dial Bac...

rnlaberge by Level 1
  • 524 Views
  • 3 replies
  • 0 Helpful votes

I have done something to my vpn to break it and I cannot figure out what it was.  I am using a design similar to:http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00805734ae.shtmlso I followed it closely.  But now I can c...

Hello,I'm trying to understand how DNS works with U-turn. I'm looking into configuring VPN tunnel between ASA 5510 (main office) and PIX 506 (remote office).Currently all workstations in remote office are connected thru VPN tunnel between PIX506 and ...

forman102 by Level 1
  • 1377 Views
  • 6 replies
  • 0 Helpful votes