Port range error

SSenturk
SSenturk Posts: 5
Hello, 
I am using zyxell DX3200-B0.
Model Name = DX3200-B0
Firmware Version = DX3200-B0-V7.0-20220119
Network Setting -> NAT->
New add Role Service Name = WAN Interface
Start Port = 25
End Port = 25
Translation Start Port =25
Translation End Port =25
Server IP Address =192.168.5.200
Protocol = TCP
AND = OK
Error Message = Port Range Error
And DMZ = 192.168.5.200

25ports not work.
What could have gone wrong?
Thanks

All Replies

  • YeK
    YeK Posts: 137  Ally Member
    hi SSenturk,

    The fw version of your device is customized, please contact with your ISP to see if it's an limitation or not. 


  • SSenturk
    SSenturk Posts: 5
    Thank you for your suggestion.
    The problem was fixed by the ISP.
    Thank you.
  • SSenturk
    SSenturk Posts: 5
    Thank you for your suggestion.
    The problem was fixed by the ISP.
    Thank you.
  • smb_corp_user
    smb_corp_user Posts: 13  Freshman Member
    Yes, it is common for most ISPs to block port 25 to fight spam traffic.
  • SSenturk
    SSenturk Posts: 5
    I think my question was misunderstood.
    Port 25 is open by ISP.
    Cannot register port forwarding 01 to 80 in currently available software.
    Unable to register NAT.
    DMZ is not working.
    I need urgent help.

  • SSenturk
    SSenturk Posts: 5
    I found a solution.
    I threw this modem in the trash.
    I bought a new modem of another brand.
    After that, I swore not to buy anything Zyxel at my workplace.
    It ruined my 1 week email traffic
    Thanks everyone.



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