Port 1717fj-hdnet
fj-hdnet uses TCP or UDP port 1717, but its protocol and deployment are not documented in the registry.
- transport
- tcp · udp
- in transit
- cleartext
- assignment
- official
- risk
- 1/10
- lookups
- 0
2 transports registered
payload readable on path
registered with iana
safe
rank 993 of 4,878 · top 20%
Technical Details
what runs on :1717fj-hdnet is registered on port :1717 over tcp and udp to Manabu Makino. We don't have a technical write-up for it beyond the IANA registry entry.
In nmap's internet-wide scan data this port is found open rarely. What's listening is often not the registered service, so check before you assume.
find what's listening on :1717
# linux
sudo ss -tulpn 'sport = :1717'
# macos / bsd
sudo lsof -nP -i :1717
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :1717nmap -sV -p T:1717 <host>
sudo nmap -sU -sV -p U:1717 <host>run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.
add technical detailsSecurity Information
exposure of :1717risk score
1/ 10safe
routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
official
registered with iana for this service — scanners fingerprint it by number
reachable over
tcp · udp
udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite
security overview
no security notes recorded for :1717 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :1717, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :1720 | H.323 Signaling | TCP | Network Services | caution | 26.5k |
| :1701 | L2TP & L2F | UDP | Security | caution | 15.1k |
| :1755 | Microsoft Media Services | TCPUDP | Streaming | caution | 13.8k |
| :1716 | America's Army MMO | TCP | Network Services | caution | 12.6k |
| :1723 | PPTP | TCPUDP | Security | caution | 11.3k |
| :1719 | H.323 RAS | UDP | Network Services | caution | 9.2k |
| :1677 | Novell GroupWise | TCPUDP | caution | 7.5k | |
| :1725 | Valve Steam | UDP | Gaming | caution | 7.3k |
risk mix of the 8 listed
- caution100%
0 of 8 encrypted