Robustel R2000 User Guide
RT_UG_R2000_v.3.0.0 July 24, 2017 69 / 124
Confidential
If choose AH as protocol, the window of SA Settings is displayed as below.
Select from “3DES”, “AES128” or “AES256” when you select “ESP” in
“Protocol”. Higher security means more complex implementation and lower
speed. DES is enough to meet general requirements. Use 3DES when high
confidentiality and security are required.
Select from “MD5”, “SHA1”, “SHA2 256” or “SHA2 512” to be used in SA
negotiation.
Select from “DHgroup2”, “DHgroup5”, “DHgroup14”, “DHgroup15”,
“DHgroup16”, “DHgroup17” or “DHgroup18” to be used in SA negotiation.
Set the IPsec SA lifetime. When negotiating set up IPsec SAs, IKE uses the
smaller one between the lifetime set locally and the lifetime proposed by
the peer.
Set the interval after which DPD is triggered if no IPsec protected packets is
received from the peer. DPD is Dead peer detection. DPD irregularly detects
dead IKE peers. When the local end sends an IPsec packet, DPD checks the
time the last IPsec packet was received from the peer. If the time exceeds
the DPD interval, it sends a DPD hello to the peer. If the local end receives
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