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Port 182 (audit)

IANA assigns port 182 to audit: Unisys Audit SITP.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
audit TCP Unisys Audit SITP Gil Greenbaum -
audit UDP Unisys Audit SITP Gil Greenbaum -

Check what is listening on port 182

Linux: is anything listening on TCP 182?
sudo ss -tlnp 'sport = :182'
Linux: UDP 182
sudo ss -ulnp 'sport = :182'
Linux / macOS: which process owns the port
sudo lsof -nP -i :182
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':182 '
Windows (Command Prompt)
netstat -ano | findstr :182
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 182 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 182
From Windows
Test-NetConnection HOST -Port 182
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 182

Block port 182 in the firewall

ufw
sudo ufw deny 182/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 182 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 182 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 182' -Direction Inbound -Protocol TCP -LocalPort 182 -Action Block
ufw
sudo ufw deny 182/udp
iptables
sudo iptables -A INPUT -p udp --dport 182 -j DROP
nftables
sudo nft add rule inet filter input udp dport 182 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 182' -Direction Inbound -Protocol UDP -LocalPort 182 -Action Block

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