how to create a vpn on ZYXEL usg20w

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  • mMontana
    mMontana Posts: 1,175
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    Did you setup correctly your windows registry for assuming that USG20 and windows are both behind a NAT?
  • stefanocps
    stefanocps Posts: 23
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    mMontana said:
    Did you setup correctly your windows registry for assuming that USG20 and windows are both behind a NAT?
    not sure..i have found 2 googling, 2 keys to add to registry..but it did not change.Perhaps you can send me this setup to make sure i am ding it correctly

  • mMontana
    mMontana Posts: 1,175
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    edited July 2021
    There should be a KB article from Zyxel.
    Not quite... A support campus article.



  • stefanocps
    stefanocps Posts: 23
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    edited July 2021
    yes it was what i did already..noway it will not connect. Why so difficult??
    Form  mobile phone it works, so i would exclude absolutely anything router configuration related...what do you think?
  • stefanocps
    stefanocps Posts: 23
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    it seems that by default vpn connection on windows use IKE 2 while the connection on router is IKE 1..can be this th eproblem?
  • Zyxel_Jeff
    Zyxel_Jeff Posts: 586
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    To address this, can we try to build the L2TP VPN connection from our Windows PC to your USG20W?
    If okay, please kindly share the connection information with us in a private message, the connection information contains:(1).Server IP address(2).L2TP/IPsec pre-shared key (3).user name (4). password.
    Or you can use another windows PC to establish L2TP VPN to USG20W and see if this symptom mainly happens on the specific PC.
  • stefanocps
    stefanocps Posts: 23
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    i have tried form another pc already and i have the same problem. Do you still want to try to connect to vpn anyway?
  • mMontana
    mMontana Posts: 1,175
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    edited July 2021
    stefanocps said:
    Why so difficult??
    A lot of pieces need to be put together to allowing a nice connection.
    Did you changed cypher and hash algorithm from default?
    Did you verify into your VPN connection the correct setup of PAP/CHAP?

    There's still this post as reference for doing a nice connection, unfortunately is missing the part related to NAT on both endpoints (which is quite a default in Italy)

  • stefanocps
    stefanocps Posts: 23
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    mMontana said:
    stefanocps said:
    Why so difficult??
    A lot of pieces need to be put together to allowing a nice connection.
    Did you changed cypher and hash algorithm from default?
    Did you verify into your VPN connection the correct setup of PAP/CHAP?

    There's still this post as reference for doing a nice connection, unfortunately is missing the part related to NAT on both endpoints (which is quite a default in Italy)

    i have done already all these configuration on my pc
  • stefanocps
    stefanocps Posts: 23
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     Freshman Member
    ookkkk sorry it works noW!  i have unselected the other 2 protocols as in picture( somewhere else i have found that i should select them all) and also verified inside the ADVANCED tab..where there was no preshared key inserted, even if i have inserted when create connection with the new wizard. SO now ita works!
    Thank you!

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