Sounds like SSL/TLS communication is set to default to cleartext.
Set network security to level 2.
You may also need to specify the SSL/TLS encrypted communication mode1. Log in as the network administrator from the control panel.
2. Press [System Settings].
3. Press [Interface Settings].
4. Press [ Next].
5. Press [Permit SSL / TLS Communication].
6. Select the encrypted communication mode.
Select [Ciphertext Only], [Ciphertext Priority], or [Ciphertext / Cleartext] as the encrypted
communication mode.
7. Press [OK].
8. Log out.
The above is from the Cxx03 security guide. You may want to check the Security Guide for the IM350 for any differences.
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