After some selection, we managed to obtain data using the set: Net8 + Linux Debian 12.8 + InterSystems.Data.CacheClient.dll Version:2015.2.0.517.0

 var cacheConnect = new CacheConnection
 {
     ConnectionString = connectionString
 };
 cacheConnect.Open();
     Console.WriteLine("CacheConnection connected");
 cacheConnect.Close();

It works fine