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142 lines
4.1 KiB
Markdown
142 lines
4.1 KiB
Markdown
# EdgeOS
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This document describes some possibilities for connecting to dn42 using an Ubiquiti EdgeRouter:
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* IPv4/IPv6 tunnel via:
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* OpenVPN - support built into EdgeOS already - covered below
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* IPsec/IKEv2 - support built into EdgeOS already - not covered here
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* QuickTun - see [vyatta-quicktun package](https://github.com/neilalexander/vyatta-quicktun) - not covered here
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* Route exchange using BGP
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* DNS resolution for the .dn42 TLD
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## First Steps
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1. Create the required objects in the Registry - see [[Getting started]]
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2. Find a peer - ask nicely in [[IRC]]!
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3. Get the following details:
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* Tunnel configuration (OpenVPN, IPsec, QuickTun)
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* AS numbers
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### Tunnel Configuration
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### OpenVPN
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Using the below as examples:
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Own ASN: AS111111
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Own IPv4 Space: 172.AA.AA.64/27
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Own IPv6 Space: fdBB:BBBB:CCCC::/48
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Own IPv4 If-Address: 172.AA.AA.65
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Own IPv6 If-Address: fdBB:BBBB:CCCC::1
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Peer OpenVPN Remote Address: 172.X.X.X //that's the peers OpenVPN IF IP
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Peer OpenVPN Remote Host: X.X.X.Y //that's the peers clearnet IP
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Peer OpenVPN IP for you: fdAA::BBB/64
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Peer OpenVPN IP: fdAA::CC
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Peer OpenVPN Port: 1194
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Peer OpenVPN encryption: aes256
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Peer ASN: AS222222
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Peer BGP Neighbour IPv4: Z.Z.Z.Z
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Peer BGP Neighbour IPv6: fdAA::CC
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#### Copy OpenVPN key to the EdgeRouter
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Copy the VPN key to `/config/auth/SomeSharedKey.key`:
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sudo cat > /config/auth/SomeSharedKey.key
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Paste the key in the terminal window, hit return once and kill `cat` with CTRL+C. Then type `exit`.
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#### Create IPv4 OpenVPN Interface
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Create the OpenVPN virtual interface, i.e. using `vtun0`:
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configure
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set interfaces openvpn vtun0
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set interfaces openvpn vtun0 mode site-to-site
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set interfaces openvpn vtun0 local-port 1194
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set interfaces openvpn vtun0 remote-port 1194
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set interfaces openvpn vtun0 local-address 172.AA.AA.65
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set interfaces openvpn vtun0 remote-address 172.X.X.X
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set interfaces openvpn vtun0 remote-host X.X.X.Y
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set interfaces openvpn vtun0 shared-secret-key-file /config/auth/SomeSharedKey.key
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set interfaces openvpn vtun0 encryption aes256
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set interfaces openvpn vtun0 openvpn-option "--comp-lzo" //if your peer support compression
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commit
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save
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exit
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The OpenVPN tunnel should now be up and running.
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Check it with:
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show interfaces openvpn
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show interfaces openvpn detail
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show openvpn status site-to-site
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### Create BGP Session
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#### Open Firewall
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You need to open the firewall to local for the tunnel Interface on port 179/tcp
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#### Configure the BGP Neighbor
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When entering AS numbers, do not include the "AS" prefix, i.e. enter AS111111 as just 111111.
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Build the BGP session with your peer:
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configure
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set protocols bgp 111111 neighbor Z.Z.Z.Z remote-as 222222
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set protocols bgp 111111 neighbor Z.Z.Z.Z soft-reconfiguration inbound
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set protocols bgp 111111 neighbor Z.Z.Z.Z update-source 172.AA.AA.65
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commit
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save
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Check that the BGP session has come up:
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show ip bgp summary
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#### Create Blackhole Route
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so bgp can announce the route
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set protocols static route 172.AA.AA.64/27 blackhole
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commit
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save
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#### Announce Route to BGP
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set protocols bgp 111111 network 172.A.A.64/27
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commit
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save
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exit
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You should now be able to see networks being advertised to your peer:
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show ip bgp neighbors Z.Z.Z.Z advertised-routes
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### Set DNS Forwarding
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Try to ping `172.23.0.53` (anycast DNS resolver). If you get a response then you are good to continue.
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Add the DNS forwarder:
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configure
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set service dns forwarding options server=/23.172.in-addr.arpa/172.23.0.53
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set service dns forwarding options server=/22.172.in-addr.arpa/172.23.0.53
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set service dns forwarding options server=/dn42/172.23.0.53
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commit
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save
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exit
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### Create NAT rule
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set service nat rule 5013 outbound-interface vtun0
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set service nat rule 5013 type masquerade
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set service nat rule 5013 description "Masquerade for dn42"
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You should now be able to access .dn42 domains.
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