User's Manual

SHA1: $RQHZD\KDVKLQJDOJRULWKPWKDWSURGXFHVDíELWKDVK
Encryption: Select the encryption method from the pull-down menu. There are four options, DES,
3DES, AES and NULL. NULL means it is a tunnel only with no encryption. 3DES and AES are
more powerful but increase latency.
DES: Stands for Data Encryption Standard, it uses 56 bits as an encryption method.
3DES: Stands for Triple Data Encryption Standard, it uses 168 (56*3) bits as an encryption
method.
AES: Stands for Advanced Encryption Standards, it uses 128 bits as an encryption method.
Perfect Forward Secrecy: &KRRVHZKHWKHUWRHQDEOH3)6XVLQJ'LI¿H+HOOPDQSXEOLFNH\
cryptography to change encryption keys during the second phase of VPN negotiation. This
IXQFWLRQZLOOSURYLGHEHWWHUVHFXULW\EXWH[WHQGVWKH931QHJRWLDWLRQWLPH'LI¿H+HOOPDQLVD
public-key cryptography protocol that allows two parties to establish a shared secret over an
XQVHFXUHGFRPPXQLFDWLRQFKDQQHOLHRYHUWKH,QWHUQHW7KHUHDUHWKUHHPRGHV02'3ELW
02'3ELWDQG02'3ELW02'3VWDQGVIRU0RGXODU([SRQHQWLDWLRQ*URXSV
Pre-shared Key:7KLVLVIRUWKH,QWHUQHW.H\([FKDQJH,.(SURWRFRODVWULQJIURPWR
FKDUDFWHUV%RWKVLGHVVKRXOGXVHWKHVDPHNH\,.(LVXVHGWRHVWDEOLVKDVKDUHGVHFXULW\SROLF\
DQGDXWKHQWLFDWHGNH\VIRUVHUYLFHVVXFKDV,36HFWKDWUHTXLUHDNH\%HIRUHDQ\,36HFWUDI¿F
can be passed, each router must be able to verify the identity of its peer. This can be done by
manually entering the pre-shared key into both sides (router or hosts).
&OLFN(GLW'HOHWHWRVDYH\RXUFKDQJHV
106