I have a VPN client that gets disconnected while using DSL with a message "IPSec terminated session". But the same laptop will stay connected for hours while using a dial connection. Where or how do I start troubleshooting a problem like this?
This question was never answered and I am having a similar problem? Anyone have any input?
I have been tracking down this problem for a while now, as several of our users have also experienced disconnects when using DSL links.
As has been mentioned some ISPs do block port 500. I have tracked the problem down to two things in our case both can cause problems:
1. MTU set to large, this causes fragmentation and if you run a personal Firewall this sees it as a Denial of service attack and starts blocking.
2. If your DSL connection uses a USB modem with VIA chipset. Always install the latest Via 4 in1 drivers and USB filter from the Via website. If you have a Motherboard of the KT7 type, one workaround is to change the BIOS settings: set the enhanced chipset performance setting on enable. This should help in most cases. For more information about the KT7 / VIA chipset issues with USB, read the KT7 FAQ or the USBman page on the Alcatel web site.
I have exactly the same situation (DSL, VPN, Windows 2000). My "record of working" is 20 minutes.
Maybe it is problem with MTU, because Microsoft Terminal Services Client doesn't work on W2K with Cisco VPN and I found some similar information in TechNet about MTU size. I know how to change MTU in NT4, but in W2K I don't know.
DocumentationCode download linksGoalRequirementLimitationsSupported ISR
and UCS-E ModelSupported ISRG2 and UCS-E Blades:Supported ISR4K and
UCS-E Blades:Step by Step ConfigurationConfigure one of the connectivity
options to access the Cisco IMC from the n...
Firepower Threat Defense (NGFWv) on UCS E-series - Transparent Mode in
HA DocumentationCode download linksGoalRequirementLimitationsSupported
ISR and UCS-E ModelSupported ISRG2 and UCS-E Blades:Supported ISR4K and
UCS-E Blades:Step by Step ConfigurationCo...
Question I am currently unable to specify "crypto keyring" command when
configuring VPN connection on my cisco 2901 router. The following
licenses have been activated on my router :