NDES – Fails to Issue Certificates (Signature Algorithm)
KB ID 0001021 Problem I was trying to enroll some ASA firewalls to NDES to get some certificates. Each time the process failed with the following error. % Error in receiving Certificate Authority certificate: status = FAIL, cert length = 0 That’s a pretty generic error, and does not give me a lot to go on. So I thought I would try from another network device, (a Cisco Catalyst switch). It’s a little easier to...
Windows and Cisco (IPSEC) VPN Client
KB ID 0000693 Problem I’d been running Windows 8 for a while now. But was the first time I needed to use my Cisco VPN Client software. So I was not happy when this happened. Note: Using VPN Client version 5.0.07.0440 Secure VPN Connection terminated locally by the Client. Reason 442: Failed to enable Virtual Adapter. Solution As it turns out this is a known problem with Windows 8, and there is a work-around. 1. Press Windows...
Mail Routing Issue ‘451 5.7.3 Cannot achieve Exchange Server authentication’
KB ID 0000791 Problem While putting in a New Exchange 2010 server today, I test moved a mailbox to this new site, and could not get mail to flow to the Exchange 2010 server at the clients main site. 451 4.4.0 Primary target IP address responded with: “451 5.7.3 Cannot achieve Exchange Server authentication.” Attempted failover to alternate host , but that did not succeed. Either there are no alternative hosts, or delivery...
HP and Cisco – VLANs and Trunks Confusion!
KB ID 0000741 Problem When I first started in IT, I went and did my Cisco CCNA. So I learned that to connect Cisco switches and pass VLAN traffic between them, I needed to create a ‘Trunk’ to pass the VLAN traffic. Fast forward a few years, and I now work for an HP reseller. Very early on I came to realise that what HP called a ‘trunk’ was very different from what I had been taught. Below is an article I did a...
GNS3 ASA Error – ‘ASDM did not recognize device model ASA5520’
KB ID 0001028 Problem Apart from the fact that’s an appalling spelling of recognise, I got bitten by this last weekend. I don’t use the ADSM as a rule so it would not normally be a problem, the only thing I do use the ASDM for is certificates, (it’s just easier). Solution Last time I saw an error like this I had to use a fiddler script to embed the firewall model in the https traffic, however now there’s a...