HTTPfy

Port 1586 (ibm-abtact)

IANA assigns port 1586 to ibm-abtact.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ibm-abtact TCP ibm-abtact Sandeep K Singhal -
ibm-abtact UDP ibm-abtact Sandeep K Singhal -

Check what is listening on port 1586

Linux: is anything listening on TCP 1586?
sudo ss -tlnp 'sport = :1586'
Linux: UDP 1586
sudo ss -ulnp 'sport = :1586'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1586
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1586 '
Windows (Command Prompt)
netstat -ano | findstr :1586
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1586 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1586
From Windows
Test-NetConnection HOST -Port 1586
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1586

Block port 1586 in the firewall

ufw
sudo ufw deny 1586/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1586 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1586 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1586' -Direction Inbound -Protocol TCP -LocalPort 1586 -Action Block
ufw
sudo ufw deny 1586/udp
iptables
sudo iptables -A INPUT -p udp --dport 1586 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1586 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1586' -Direction Inbound -Protocol UDP -LocalPort 1586 -Action Block

Related ports

1584tn-tl-fd21585intv1587pra-elmd, pra_elmd1588triquest-lm

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