HTTPfy

Port 2141 (ias-admind)

IANA assigns port 2141 to ias-admind: IAS-ADMIND.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ias-admind TCP IAS-ADMIND Baiju V Patel -
ias-admind UDP IAS-ADMIND Baiju V Patel -

Check what is listening on port 2141

Linux: is anything listening on TCP 2141?
sudo ss -tlnp 'sport = :2141'
Linux: UDP 2141
sudo ss -ulnp 'sport = :2141'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2141
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2141 '
Windows (Command Prompt)
netstat -ano | findstr :2141
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2141 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2141
From Windows
Test-NetConnection HOST -Port 2141
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2141

Block port 2141 in the firewall

ufw
sudo ufw deny 2141/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2141 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2141 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2141' -Direction Inbound -Protocol TCP -LocalPort 2141 -Action Block
ufw
sudo ufw deny 2141/udp
iptables
sudo iptables -A INPUT -p udp --dport 2141 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2141 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2141' -Direction Inbound -Protocol UDP -LocalPort 2141 -Action Block

Related ports

2139ias-auth2140ias-reg2142tdmoip2143lv-jc

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