howto/OpenBGPD.md
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@@ -5,14 +5,14 @@ The [portable version](https://openbgpd.org/ftp.html) should run with little to
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Only IPv6 is used for the sake of simplicity.
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Neighbors use ULA addresses (/127 transfer net) assigned from one of the peer's allocation.
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-The goal is to have a small, yet complete setup for all peers with ROA validation and other safety measurements in place.
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+The goal is to have a small, yet complete setup for all peers with ROA validation and other safety measures in place.
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# Configuration
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[`/etc/bgpd.conf`](https://man.openbsd.org/bgpd.conf.5) contains all information and may include further (automatically generated) files, as is done in this guide.
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As per the manual, configuration is divided into logical sections; [`/etc/examples/bgpd.conf`](http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/etc/examples/bgpd.conf?rev=HEAD&content-type=text/plain&only_with_tag=MAIN) is a complete and commented example which this guide is roughly based on.
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-By default, [bgpd(8)](http://man.openbsd.org/bgpd.8) listens on all local addresses (on the current default [`routing domain`](http://man.openbsd.org/rdomain.4)), but this guide explicitly listens on the configured transfer ULA only for each peer to better illustrate of this setup.
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+By default, [bgpd(8)](http://man.openbsd.org/bgpd.8) listens on all local addresses (on the current default [`routing domain`](http://man.openbsd.org/rdomain.4)), but this guide explicitly listens on the configured transfer ULA only for each peer to better illustrate this setup.
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## local host
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Information such as ASN, router ID and allocated networks are required:
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## filter rules
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**bgpd** blocks all BGP __UPDATE__ messages by default.
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-The filter rules are evaluated in sequential order, form first to last.
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+The filter rules are evaluated in sequential order, from first to last.
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The last matching allow or deny rule decides what action is taken.
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Start off with basic protection and sanity rules:
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# ROA
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-An roa-set can be generated from the registry directly or you can use the following pre-build tables.
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+An roa-set can be generated from the registry directly or you can use the following pre-built tables.
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One single `roa-set` may be defined, against which **bgpd** will validate the origin of each prefix; this allows filter rules to use the `ovs` keyword as demonstrated above.
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