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Port 4595 (ias-paging)

IANA assigns port 4595 to ias-paging: IAS-Paging (ANRI-ANRI).

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ias-paging TCP IAS-Paging (ANRI-ANRI) - -
ias-paging UDP IAS-Paging (ANRI-ANRI) - -

Check what is listening on port 4595

Linux: is anything listening on TCP 4595?
sudo ss -tlnp 'sport = :4595'
Linux: UDP 4595
sudo ss -ulnp 'sport = :4595'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4595
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4595 '
Windows (Command Prompt)
netstat -ano | findstr :4595
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4595 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4595
From Windows
Test-NetConnection HOST -Port 4595
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4595

Block port 4595 in the firewall

ufw
sudo ufw deny 4595/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4595 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4595 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4595' -Direction Inbound -Protocol TCP -LocalPort 4595 -Action Block
ufw
sudo ufw deny 4595/udp
iptables
sudo iptables -A INPUT -p udp --dport 4595 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4595 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4595' -Direction Inbound -Protocol UDP -LocalPort 4595 -Action Block

Related ports

4593ipt-anri-anri4594ias-session4596ias-neighbor4597a21-an-1xbs

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