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diff --git a/docs/sources/rpki.md b/docs/sources/rpki.md new file mode 100644 index 00000000..c49f6082 --- /dev/null +++ b/docs/sources/rpki.md @@ -0,0 +1,187 @@ +# RPKI + +This page explains how to use a Resource Public Key Infrastructure +(RPKI) server to do Origin AS Validation. + +## Prerequisites + +Assume you finished [Getting Started](https://github.com/osrg/gobgp/blob/master/docs/sources/getting-started.md). + +## Contents + +- [Configuration](#section0) +- [Validation](#section1) +- [Policy with validation results](#section2) + +## <a name="section0"> Configuration + +You need to add **[RpkiServers]** section to your configuration +file. We use the following file. Note that this is for route server +setup but RPKI can be used with non route server setup. + +```toml +[Global] + [Global.GlobalConfig] + As = 64512 + RouterId = "10.0.255.254" + +[Neighbors] + [[Neighbors.NeighborList]] + [Neighbors.NeighborList.NeighborConfig] + PeerAs = 65001 + NeighborAddress = "10.0.255.1" + [Neighbors.NeighborList.RouteServer] + [Neighbors.NeighborList.RouteServer.RouteServerConfig] + RouteServerClient = true + + [[Neighbors.NeighborList]] + [Neighbors.NeighborList.NeighborConfig] + PeerAs = 65002 + NeighborAddress = "10.0.255.2" + [Neighbors.NeighborList.RouteServer] + [Neighbors.NeighborList.RouteServer.RouteServerConfig] + RouteServerClient = true + +[RpkiServers] + [[RpkiServers.RpkiServerList]] + [RpkiServers.RpkiServerList.RpkiServerConfig] + Address = "210.173.170.254" + Port = 323 +``` + +## <a name="section1"> Validation + +You can verify whether gobgpd successfully connects to the RPKI server +and get the ROA (Route Origin Authorization) information in the +following way: + +```bash +$ gobgp rpki|head -n4 +Network Maxlen AS +2.0.0.0/12 16 3215 +2.0.0.0/16 16 3215 +2.1.0.0/16 16 3215 +$ gobgp rpki -l|wc +14576 +``` + +By default, IPv4's ROA information is shown. You can see IPv6's like: + +```bash +$ gobgp rpki -a ipv6|head -n4 +fujita@ubuntu:~$ gobgp rpki -a ipv6|head -n3 +Network Maxlen AS +2001:608::/32 32 5539 +2001:610::/32 48 1103 +2001:610:240::/42 42 3333 +$ gobgp rpki -a ipv6|wc -l +2150 +``` + +We configure the peer 10.0.255.1 to send three routes: + +1. 2.0.0.0/12 (Origin AS: 3215) +2. 2.1.0.0/16 (Origin AS: 65001) +3. 192.186.1.0/24 (Origin AS: 65001) + +From the above ROA information, the first is valid. the second is +invalid (the origin should be 3215 too). the third is a private IPv4 +address so it should not be in the ROA. + +Let's check out the adjacent rib-in of the peer: + +```bash +$ gobgp neighbor 10.0.255.1 adj-in + Network Next Hop AS_PATH Age Attrs + V 2.0.0.0/12 10.0.255.1 3215 00:08:39 [{Origin: i}] + I 2.1.0.0/16 10.0.255.1 65001 00:08:39 [{Origin: i}] + N 192.168.1.0/24 10.0.255.1 65001 00:08:39 [{Origin: i}] +``` + +As you can see, the first is marked as "V" (Valid), the second as "I" +(Invalid), and the third as "N" (Not Found). + + +## <a name="section2"> Policy with validation results + +The validation result can be used as [Policy's +condition](https://github.com/osrg/gobgp/blob/master/docs/sources/policy.md). You +can do any actions (e.g., drop the route, adding some extended +community attribute, etc) according to the validation result. As an +example, this section shows how to drop an invalid route. + +Currently, all the routes from peer 10.0.255.1 are included in peer 10.0.255.2's local RIB. + +```bash +$ gobgp neighbor 10.0.255.2 local + Network Next Hop AS_PATH Age Attrs + V*> 2.0.0.0/12 10.0.255.1 3215 00:23:47 [{Origin: i}] + I*> 2.1.0.0/16 10.0.255.1 65001 00:23:47 [{Origin: i}] + N*> 192.168.1.0/24 10.0.255.1 65001 00:23:47 [{Origin: i}] +``` + +We add a policy to the above configuration. + +```toml +[Global] + [Global.GlobalConfig] + As = 64512 + RouterId = "10.0.255.254" + +[Neighbors] + [[Neighbors.NeighborList]] + [Neighbors.NeighborList.NeighborConfig] + PeerAs = 65001 + NeighborAddress = "10.0.255.1" + [Neighbors.NeighborList.RouteServer] + [Neighbors.NeighborList.RouteServer.RouteServerConfig] + RouteServerClient = true + + [[Neighbors.NeighborList]] + [Neighbors.NeighborList.NeighborConfig] + PeerAs = 65002 + NeighborAddress = "10.0.255.2" + [Neighbors.NeighborList.RouteServer] + [Neighbors.NeighborList.RouteServer.RouteServerConfig] + RouteServerClient = true + [Neighbors.NeighborList.ApplyPolicy] + [Neighbors.NeighborList.ApplyPolicy.ApplyPolicyConfig] + ImportPolicy = ["AS65002-IMPORT-RPKI"] + +[RpkiServers] + [[RpkiServers.RpkiServerList]] + [RpkiServers.RpkiServerList.RpkiServerConfig] + Address = "210.173.170.254" + Port = 323 + +[PolicyDefinitions] + [[PolicyDefinitions.PolicyDefinitionList]] + Name = "AS65002-IMPORT-RPKI" + [PolicyDefinitions.PolicyDefinitionList.Statements] + [[PolicyDefinitions.PolicyDefinitionList.Statements.StatementList]] + Name = "statement1" + [PolicyDefinitions.PolicyDefinitionList.Statements.StatementList.Conditions] + [PolicyDefinitions.PolicyDefinitionList.Statements.StatementList.Conditions.BgpConditions] + RpkiValidationResult = 3 + + [PolicyDefinitions.PolicyDefinitionList.Statements.StatementList.Actions] + [PolicyDefinitions.PolicyDefinitionList.Statements.StatementList.Actions.RouteDisposition] + RejectRoute = true +``` + +The value for **RpkiValidationResult** are defined as below. + +| Validation Result | Value | +|-------------------|-------| +| Not Found | 1 | +| Valid | 2 | +| Invalid | 3 | + +With the new configuration, the IMPORT policy rejects the invalid 2.1.0.0/16. + +```bash +$ gobgp neighbor 10.0.255.2 local + Network Next Hop AS_PATH Age Attrs + V*> 2.0.0.0/12 10.0.255.1 3215 00:00:21 [{Origin: i}] + N*> 192.168.1.0/24 10.0.255.1 65001 00:00:21 [{Origin: i}] +``` |