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VPN tunnel between Cisco and VyOS behind NAT

As a follow up to the VPN tunnel between Cisco and VyOS routers using VTIs post, let’s see a different scenario where the VyOS router is on a private network behind a firewall that provides NAT; for example hosted a cloud network.

Feb 20, 2017 - 5 min read
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VPN tunnel between Cisco and VyOS routers using VTIs

Creating VPN tunnels between different vendors is usually at the bottom of a networker’s list of desires, however sometimes it can’t be avoided. We’re connecting a Cisco router to a VyOS one, and make them exchange routing information using OSPF.

Nov 6, 2016 - 4 min read
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Replication Over The Backup WAN, Part 3

“It’s fine to have a backup link, but normally it’s not used and we’re paying a lot for it; could you send our file storage’s replication traffic through it?

May 5, 2016 - 11 min read
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Replication Over The Backup WAN, Part 2

“It’s fine to have a backup link, but normally it’s not used and we’re paying a lot for it; could you send our file storage’s replication traffic through it?

Apr 29, 2016 - 8 min read
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Replication Over The Backup WAN, Part 1

“It’s fine to have a backup link, but normally it’s not used and we’re paying a lot for it; could you send our file storage’s replication traffic through it?

Apr 25, 2016 - 4 min read
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VyOS (Quagga, Vyatta) Route Selection

Cisco’s OSPF path selection, that is different from RFC 2328 and 3101, has been discussed in many articles (here’s a nice one from INE). I was wondering how VyOS, running Quagga, handles the same prefixes received with different LSAs.

Apr 14, 2016 - 8 min read