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Updates services.md, added ucarp documentation

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SaintYomar 2019-06-17 12:25:00 -05:00 committed by GitHub
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docs/services.md
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@ -330,3 +330,13 @@ The security services offer a wide variety of protocols capable of satisfying th
```shell
sudo apt-get install ipsec-tools racoon openvpn
```
#### UCARP
UCARP allows a couple of hosts to share common virtual IP addresses in order to provide automatic failover. It is a portable userland implementation of the secure and patent-free Common Address Redundancy Protocol (CARP, OpenBSD's alternative to the patents-bloated VRRP).
Strong points of the CARP protocol are: very low overhead, cryptographically signed messages, interoperability between different operating systems and no need for any dedicated extra network link between redundant hosts.
##### Installation
```shell
sudo apt-get install ucarp
```