| Side A | Side B | Side A | Side B | |||
| 1. | IMAP | Interactive Mail Access Protocol, Version... | 10. | SNMP | Simple Network Management ProtocolPort 161TCP,... | |
| 2. | SFTP | Simple File Transfer ProtocolPort 115TCP | 11. | POP3 | Post Office Protocol 3Port 110TCP | |
| 3. | TFTP | Trivial File Transfer ProtocolPort 69UDP | 12. | HTTP | HyperText Transfer ProtocolPort 80TCP | |
| 4. | BOOTP Client | Bootstrap Protocol ClientPort 68UDP | 13. | BOOTP Server | Bootstrap Protocol ServerPort 67UDP | |
| 5. | Graphics | Port 41TCP, UDP | 14. | DNS | Domain Name SystemPort 53TCP, UDP | |
| 6. | SMTP | Simple Mail Transfer ProtocolPort 25TCP | 15. | RIP | Routing Information ProtocolPort 520UDP | |
| 7. | Telnet Protocol | Used for remote accessPort 23TCP | 16. | FTP Server | File Transfer ProtocolPort 21TCP | |
| 8. | FTP Client | File Transfer ProtocolPort 20TCP | 17. | RTSP | Real Time Streaming ProtocolPort 554TCP,... | |
| 9. | DHCP Client | Dynamic Host Configuration Protocol ClientPort... | 18. | DHCP Host | Dynamic Host Configuration Protocol Jost Port... |
Fixing Tanzu Kubernetes Pod to External Services Connectivity Issues with NSX-T Last month I got a call from a customer who was pulling their hair out over a networking issue. They had just deployed VMware Tanzu Kubernetes Grid on their vSphere with Tanzu environment, everything looked good in the dashboards, all pods were running, but their applications inside the pods could not reach external databases running on traditional VMs in the same datacenter. The frustrating part was that some pods could reach external services perfectly fine, while others would just timeout. There was no clear pattern. Let me tell you how we figured this out and fixed it. The Initial Problem Here is what the customer setup looked like: vSphere 8.0 with Tanzu enabled NSX-T 4.1.2 for networking Three Tanzu Kubernetes clusters running different microservices applications External PostgreSQL database running on traditional VMs (non-Kubernetes) External API services running on another se...