Port Number for every devOps engineer
Essential Port Numbers for DevOps Engineers
Common Protocols and Services
1. HTTP:
- Port: 80
- Purpose: Unsecured web traffic
2. HTTPS:
- Port: 443
- Purpose: Secure web traffic (TLS/SSL)
3. SSH:
- Port: 22
- Purpose: Secure shell access for remote administration.
4.FTP:
- Port: 20 (data transfer), 21 (control)
- Purpose: File Transfer Protocol.
5. SFTP:
- Port: 22
- Purpose: Secure FTP via SSH.
6. Telnet:
- Port: 23
- Purpose: Unsecured remote administration (rarely used now).
7. DNS:
- Port: 53
- Purpose: Domain Name System resolution
8. SMTP:
- Port: 25, 587 (with encryption), 465 (deprecated)
- Purpose: Email sending.
9. IMAP:
- Port: 143 (unencrypted), 993 (encrypted)
- Purpose: Retrieve emails (modern email clients).
10.POP3:
- Port: 110 (unencrypted), 995 (encrypted)
- Purpose: Retrieve emails (older protocol).
DevOps and Automation Tools
1. Jenkins
- Port: 8080 (default)
- Purpose: Continuous Integration/Delivery.
2. Docker:
- Port: 2375 (unencrypted), 2376 (encrypted)
- Purpose: Docker API.
3. Kubernetes API Server:
- Port: 6443
- Purpose: Communication with Kubernetes API.
4. Terraform Enterprise:
- Port: 8800 (default)
- Purpose: Backend services
Databases
1. MySQL:
- Port: 3306
- Purpose: MySQL database.
2. PostgreSQL:
- Port: 5432
- Purpose: PostgreSQL database
3. MongoDB:
- Port: 27017
- Purpose: MongoDB NoSQL database.
4. Redis:
- Port: 6379
- Purpose: In-memory data store.
5. Elasticsearch:
- Port: 9200 (HTTP), 9300 (Node communication)
- Purpose: Search and analytics engine.
Cloud and Monitoring Tools
1. Prometheus:
- Port: 9090
- Purpose: Monitoring and alerting
2. Grafana:
- Port: 3000
- Purpose: Data visualization and dashboards.
3. Consul:
- Port: 8500 (HTTP API), 8600 (DNS queries)
- Purpose: Service discovery and configuration.
4. Vault:
- Port: 8200
- Purpose: Secrets management
5. Zabbix:
- Port: 10051 (server), 10050 (agent)
- Purpose: Monitoring.
Version Control
1. Git (SSH):
- Port: 22
- Purpose: Secure Git operations.
2. Git (HTTPS):
- Port: 443
- Purpose: Secure Git operations via HTTPS.
Messaging and Queueing Systems
1. RabbitMQ:
- Port: 5672 (AMQP), 15672 (Management console)
- Purpose: Message broker.
2. Kafka:
- Port: 9092
- Purpose: Distributed messaging system
Miscellaneous
1. NTP:
- Port: 123
- Purpose: Network Time Protocol.
2. LDAP:
- Port: 389 (unencrypted), 636 (encrypted)
- Purpose: Directory services.
3. SNMP:
- Port: 161 (queries), 162 (traps)
- Purpose: Network monitoring.
4. RDP:
- Port: 3389
- Purpose: Remote Desktop Protocol (Windows).
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