gre-plus-ipsec-debian.md
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@@ -16,4 +16,14 @@ Example policy on 1.2.3.4:
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#!/usr/sbin/setkey -f
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spdadd 1.2.3.4 5.6.7.8 gre -P out ipsec esp/transport//require;
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spdadd 5.6.7.8 1.2.3.4 gre -P in ipsec esp/transport//require;
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-```
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\ No newline at end of file
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+```
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+
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+## Load the IPsec security policy into the IPsec security policy database
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+Load the policy with the setkey command.
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+```
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+setkey -f /etc/ipsec-tools.conf
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+```
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+Afterward check the policy database with:
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+```
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+setkey -DP
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+```