Implementing GDOI into DMVPN
GDOI into DMVPN KB ID 0000956 Problem Just recently I covered DMVPN, which is a great scalable system for adding new sites to your network infrastructure and have them join an existing VPN solution without the need to add extra config at the ‘hub’ site. One of the advantages of DMVPN is it maintains VPN connections from your ‘Spoke’ sites back to the ‘Hub’ site, but if a spoke site needs to speak...
Cisco Router – Configure NAT (NAT Overload)
NAT Overload KB ID 0000971 Problem NAT is the process of taking one or more IP addresses and translating it/them into different IP addresses. You may require your router to translate all your internal IP addresses to your public (ISP allocated) IP address. To do that we use a process called NAT Overload. Solution : Nat Overload 1. Connect to the router, and got to enable mode, then global configuration mode. PetesRouter#configure...
Cisco ASA Domain Authentication and Trust (Allowing)
ASA Domain Authentication KB ID 0000973 Problem I cringed this morning when I was asked about this, last time I had to get a client to authenticate to a domain through a firewall, it was ‘entertaining’. The problem is Windows loves to use RPC, which likes to use random ports, so to make it work you either had to open TCP ports 49152 and 65535 (Yes I’m Serious). Or you had to registry hack all your domain controllers...
Cisco ASA VPN to Cisco Router “MM_WAIT_MSG3”
KB ID 0001531 Problem While migrating a VPN tunnel from an ASA 5520 firewall to a new 5516-X I got this problem. The other end was a Cisco router (2900). As soon as I swapped it over, it was stuck at MM_WAIT_MSG3, and phase 1 would not establish; NUFC-ASA5516x(config-tunnel-ipsec)# show crypto isa IKEv1 SAs: Active SA: 6 Rekey SA: 0 (A tunnel will report 1 Active and 1 Rekey SA during rekey) Total IKE SA: 6 1 IKE Peer: 1.1.1.1 Type :...
ADMT (Active Directory Migration Tool) Domain Migration – Part 4
KB ID 0001308 Problem On the homeward stretch now, back in Part Three, we migrated service accounts, groups, and users. Now we turn our attention to our machines. Note ADMT 3.2 Only support the migration of Operating Systems up to Windows 7, (that doesn’t mean Windows 8 and Windows 10 wont work, it just means they are not supported). Migrating Windows 8 and 10 throws a lot of security translation errors, because of the way it...