Dell SonicWALL GX250 Manual page 130

Configuring VPN Client Key Exchange Proposal
1. Double click Key Exchange in the Network Security Policy box. Then select
Proposal 1 below Key Exchange.
2. Select Unspecified in the SA Life menu.
3. Select None in the Compressed menu.
4. Check the Encapsulation Protocol (ESP) checkbox.
5. Select DES in the Encryption Alg menu.
6. Select MD5 in the Hash Alg menu.
7. Select Tunnel in the Encapsulation menu.
8. Leave the Authentication Protocol (AH) checkbox unchecked.
Page 130 SONICWALL VPN