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Port 5435 (sceanics)

IANA assigns port 5435 to sceanics: SCEANICS situation and action notification.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sceanics TCP SCEANICS situation and action notification Richard Olsen -
sceanics UDP SCEANICS situation and action notification Richard Olsen -

Check what is listening on port 5435

Linux: is anything listening on TCP 5435?
sudo ss -tlnp 'sport = :5435'
Linux: UDP 5435
sudo ss -ulnp 'sport = :5435'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5435
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5435 '
Windows (Command Prompt)
netstat -ano | findstr :5435
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5435 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5435
From Windows
Test-NetConnection HOST -Port 5435
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5435

Block port 5435 in the firewall

ufw
sudo ufw deny 5435/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5435 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5435 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5435' -Direction Inbound -Protocol TCP -LocalPort 5435 -Action Block
ufw
sudo ufw deny 5435/udp
iptables
sudo iptables -A INPUT -p udp --dport 5435 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5435 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5435' -Direction Inbound -Protocol UDP -LocalPort 5435 -Action Block

Related ports

5433pyrrho5434sgi-arrayd5436pmip6-cntl5437pmip6-data

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.