impala kudu jdbc connection does not work?

[#1]

Hello, 

I install impala/kudu on HDP 2.6.2.2: 

impalad version 2.7.0-cdh5-IMPALA_KUDU-cdh5 RELEASE (build 48f1ad385382cd90dbaed53b174965251d91d088) 

With impala-shell i created database "imp_kudu" with single table "test_table"

When I try to open JDBC connection for "ImpalaJDBC4.jar" driver using url:

jdbc:impala://myserver.com:21050/imp_kudu;AuthMech=0

I have the following error

Cloudera][ImpalaJDBCDriver](500164) Error initialized or created transport for authentication: Operation timed out (Connection timed out).

What kind of problem does this indicate and how can I resolve it?

[#2 · Accepted solution]

resolved: port 21050 was blocked by vpn. after creating ssh tunnel connection worked