# IPSec Proposal

An [IPSec](https://en.wikipedia.org/wiki/IPsec) proposal defines a set of parameters used in negotiating security associations for IPSec tunnels. IPSec proposals defined in NetBox can be referenced by [IPSec policies](./ipsecpolicy.md), which are in turn employed by [IPSec profiles](./ipsecprofile.md).

## Fields

### Name

The unique user-assigned name for the proposal.

### Encryption Algorithm

The protocol employed for data encryption. Options include DES, 3DES, and various flavors of AES.

### Authentication Algorithm

The mechanism employed to ensure data integrity. Options include MD5 and SHA HMAC implementations.

### SA Lifetime (Seconds)

The maximum amount of time for which the security association (SA) may be active, in seconds.

### SA Lifetime (Data)

The maximum amount of data which can be transferred within the security association (SA) before it must be rebuilt, in kilobytes.