Trying to run application in kubernetes which need to access Sybase DB from with in the Pod . I have the below egress Network policy which should allow all .The sybase db connection is getting created but its getting closed soon(Connection Closed Error) . Sybase docs say

Firewall software may filter network packets according to network port. Also, it is common to disallow UDP packets from crossing the firewall.

My question is do i need to explicitly specify something for UDP or should nt the egress Allow all ( {}) take care of this ?

NetWork Policy

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: spring-app-network-policy
spec:
  podSelector:
    matchLabels:
      role: spring-app
  ingress:
    - {}
  egress:
    - {}
  policyTypes:
  - Ingress
  - Egress