Cisco ASA DHCP Reservation (Solved)
KB ID 0001751 Problem We have been asking for this for years! Even on my home network I’ve not been able to allocate an ASA DHCP reservation for my laptop and my MyCloud drive. I’ve been in discussions in forums with people who are convinced that putting a static ARP entry into the ASA would solve the problem (it doesn’t – I tested it extensively!) But finally in version 9.13(1) we can now add a static DHCP...
AnyConnect 4 – Plus and Apex Licensing Explained
KB ID 0001013 Problem (Updated 11/05/21) Before version 4 we simply had AnyConnect Essentials and Premium licensing, now we have Plus and Apex licensing. AnyConnect Plus and Apex There are in fact three licensing options; Cisco AnyConnect Plus Subscription Licenses Cisco AnyConnect Plus Perpetual Licenses Cisco AnyConnect Apex Subscription Licenses NEW VPN Only perpetual Licences Plus and Apex Contain; AnyConnect PLUS (Cisco pitch...
macOS – SSH Error ‘No Matching Exchange Method Found’
Mac SSH Error KB ID 0001245 Problem Note Certified working all the way up to macOS Ventura version 13.0.1 I thought my RoyalTSX had broken today, I upgraded it a couple of weeks ago, and I upgraded to macOS Catalina 10.15 the other day. After this, all my SSH sessions refused to connect with this error; Unable to negotiate with x.x.x.x port 22: no matching key exchange found. Their offer diffie-hellman-group1-sha1 Note: You may...
Replacing Cisco Firewalls with Fortinet Firewalls
KB ID 0001741 Replacing Cisco If you’ve been following articles on the site you will know that the focus of the firewall related output is shifting from Cisco ASA / Cisco FirePOWER to Fortinet (FortiGate) firewalls. This article is so you can make an informed choice about what you want to replace your Cisco firewall with. Note: I’m starting with SOHO and Small Business sized firewalls, but I will extend this to...
Cisco ASA to Fortigate VPN (Properly!)
KB ID 0001721 Problem A while ago I did a run through on site to site VPNs from Cisco ASA to Fortigate firewalls. Back then I said that the default settings were a bit ‘shoddy’ and that I’d revisit it once I had more time. What do you mean shoddy? Well, Cisco and Fortinet are both guilty of enabling ‘Everything’ to make the tunnel come up, so people can just use a wizard and not put to much thought into...
Cisco ASA: Received a DELETE PFKey message from IKE
KB ID 0001720 Problem I was debugging a VPN tunnel today. (From a Fortigate to a Cisco ASAv). I was messing around with the encryption and hashing, when the tunnel fell over. Phase 1 was establishing fine but not Phase 2 (IPSEC). I’ve got better skills on the ASA, so that’s where I was debugging; IPSEC: Received a PFKey message from IKE IPSEC: Parsing PFKey GETSPI message IPSEC: Creating IPsec SA IPSEC: Getting the...