Port 30777ZangZing Agent
ZangZing Agent was part of ZangZing's photo-sharing service, enabling synchronization between a user's local device and the ZangZing cloud platform. The agent facilitated communication, upload, and download of images, automating the management of photo albums across devices and the online service..
- transport
- tcp
- in transit
- cleartext
- assignment
- unofficial
- risk
- 4/10
- lookups
- 4,366
single transport
payload readable on path
used by convention
caution
rank 971 of 993 · top 98%
Technical Details
what runs on :30777Overview
ZangZing Agent utilized port 30777, likely over TCP, to establish connections between a local client and ZangZing's remote services. Its primary function was to handle the transfer and synchronization of image data and album metadata, streamlining the process of uploading large batches of photos or keeping albums up to date.
Protocol Details
Being unofficial and likely proprietary, the agent would have used an application-layer protocol customized for the service's needs. Underneath, it relied on TCP’s reliable data transfer features to efficiently synchronize files. The port was probably chosen arbitrarily or to prevent conflicts with other common services.
Deployment Context
The agent was typically used by end-users on personal devices running the ZangZing desktop client. It established outbound connections to ZangZing cloud infrastructure. Since ZangZing was discontinued, this protocol and port usage are now largely historical with little to no legitimate traffic expected.
Security Information
exposure of :30777risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
file transfer averages 4.1 across 114 ports — this one sits 0.1 below.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
unofficial
used by convention, not registered — what answers here varies by deployment
reachable over
tcp
every listening transport is another surface to filter at the edge
security overview
Common Vulnerabilities
- Unencrypted transmission could expose sensitive user data such as photos or metadata.
- If still running, the deprecated service components may be vulnerable to:
- Buffer overflows or injection attacks in the client software.
- Exploitation as a pivot point for lateral movement inside a network.
- Abandoned services may be susceptible to spoofing or replay attacks.
Mitigations
- Block inbound and outbound traffic on port 30777 to prevent unauthorized use.
- Remove legacy or unused ZangZing agent software from endpoints.
- Apply network segmentation and firewall rules to limit access.
- Conduct regular vulnerability scanning to detect obsolete software.
- Enforce strong endpoint security hygiene, such as up-to-date antivirus and patching.
Related Ports
the 8 most looked-up other ports in file transfer — 114 ports carry that label.
| port | service | risk | |||
|---|---|---|---|---|---|
| :9080 | Groove RPC | TCPUDP | Web Services | caution | 70.8k |
| :17500 | Dropbox LAN Sync | TCPUDP | File Transfer | caution | 43.7k |
| :548 | Apple Filing Protocol | TCP | File Transfer | caution | 36.8k |
| :7000 | Vuze HTTPS Tracker | TCPtls | Security | caution | 28.9k |
| :1337 | PowerFolder P2P | TCP | Security | caution | 27.1k |
| :9001 | SharePoint Authoring | Web Services | caution | 26.3k | |
| :8080 | FilePhile Relay | UDP | File Transfer | caution | 25.6k |
| :1337 | WASTE Encrypted Sharing | TCP | Security | caution | 22.9k |
risk mix of the 8 listed
- caution100%
1 of 8 encrypted