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// Databases & caches

Port 5636: SFMdb - SFM DB server

Port 5636 is assigned by IANA to sfm-db-server (SFMdb - SFM DB server).

5636

How sfm-db-server works

Databases & caches
app:5636sfm-db-server app:5636sfm-db-server

The application sends a SQL query to the sfm-db-server server on port 5636, which returns rows from its tables.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Databases & caches
01 Security

Is port 5636 dangerous?

We have no specific security note for port 5636. Its risk depends on the program actually listening on it. General advice for databases & caches services:

  • Bind the service to localhost or a private network, never to a public address.
  • Enable authentication, use per-application accounts and require TLS.
  • Watch for exposed Docker ports: publish them on 127.0.0.1 only.
02 Registry

IANA registry entries for port 5636

ServicePortTransportDescriptionReferenceUpdated
sfm-db-server 5636 TCP SFMdb - SFM DB server - 2008-10-06
-5636-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5636, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5636'      # process listening on 5636
sudo lsof -nP -i :5636

macOS

sudo lsof -nP -i :5636

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5636 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5636
netstat -ano | findstr :5636

From another machine

nmap -p 5636 -sV <host>
nc -zv <host> 5636

Block it in the firewall

sudo ufw deny 5636/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5636" -Direction Inbound -LocalPort 5636 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5636 used for?

Port 5636 is assigned by IANA to sfm-db-server (SFMdb - SFM DB server).

Is port 5636 TCP or UDP?

Port 5636 is registered for TCP.

Is it safe to open port 5636?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Bind the service to localhost or a private network, never to a public address.

How do I check if port 5636 is open?

On Linux run "ss -ltnup 'sport = :5636'", on macOS "lsof -nP -i :5636", and on Windows "netstat -ano | findstr :5636" to see the local process. From another machine, "nmap -p 5636 <host>" shows whether it is reachable.

05 Related
:3306 MySQL / MariaDB tcp · udp · high risk :1433 Microsoft SQL Server tcp · udp · high risk :5432 PostgreSQL tcp · udp · high risk :6379 Redis tcp · critical risk :27017 MongoDB tcp · critical risk :9200 Elasticsearch tcp · udp · critical risk :1521 Oracle Database tcp · udp · high risk :11211 Memcached tcp · udp · high risk

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