Port 7001 (Cassandra TLS / WebLogic)

Cassandra inter-node traffic over TLS, and the default HTTP port of Oracle WebLogic Server.

Registered (user) port, 1024-49151 TCP Databases Do not expose to the internet

What port 7001 is used for

Cassandra inter-node traffic over TLS, and the default HTTP port of Oracle WebLogic Server.

Security: should port 7001 be open?

Do not expose to the internet. WebLogic on 7001 has a long list of mass-exploited deserialization RCEs (T3/IIOP); never expose its admin console and patch quickly.

IANA assignment

Service nameProtoDescriptionAssigneeReference

afs3-callback TCP callbacks to cache managers - -

afs3-callback UDP callbacks to cache managers - -

Check what is listening on port 7001

Linux: is anything listening on TCP 7001?

sudo ss -tlnp 'sport = :7001'

Linux / macOS: which process owns the port

sudo lsof -nP -i :7001

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':7001 '

Windows (Command Prompt)

netstat -ano | findstr :7001

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7001 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 7001

From Windows

Test-NetConnection HOST -Port 7001

Block port 7001 in the firewall

ufw

sudo ufw deny 7001/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 7001 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 7001 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 7001' -Direction Inbound -Protocol TCP -LocalPort 7001 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.