Port 9026 (swa-4)

IANA assigns port 9026 to swa-4: Secure Web Access - 4.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

swa-4 TCP Secure Web Access - 4 Tim McGranaghan -

swa-4 UDP Secure Web Access - 4 Tim McGranaghan -

Linux: is anything listening on TCP 9026?

sudo ss -tlnp 'sport = :9026'

Linux: UDP 9026

sudo ss -ulnp 'sport = :9026'

Linux / macOS: which process owns the port

sudo lsof -nP -i :9026

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':9026 '

Windows (Command Prompt)

netstat -ano | findstr :9026

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9026 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 9026

From Windows

Test-NetConnection HOST -Port 9026

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 9026

ufw

sudo ufw deny 9026/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 9026 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 9026 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 9026' -Direction Inbound -Protocol TCP -LocalPort 9026 -Action Block

ufw

sudo ufw deny 9026/udp

iptables

sudo iptables -A INPUT -p udp --dport 9026 -j DROP

nftables

sudo nft add rule inet filter input udp dport 9026 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 9026' -Direction Inbound -Protocol UDP -LocalPort 9026 -Action Block

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