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Port 26261 (ezmeeting)

IANA assigns port 26261 to ezmeeting: eZmeeting.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ezmeeting TCP eZmeeting Albert C Yang -
ezmeeting UDP eZmeeting Albert C Yang -

Check what is listening on port 26261

Linux: is anything listening on TCP 26261?
sudo ss -tlnp 'sport = :26261'
Linux: UDP 26261
sudo ss -ulnp 'sport = :26261'
Linux / macOS: which process owns the port
sudo lsof -nP -i :26261
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':26261 '
Windows (Command Prompt)
netstat -ano | findstr :26261
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 26261 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 26261
From Windows
Test-NetConnection HOST -Port 26261
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 26261

Block port 26261 in the firewall

ufw
sudo ufw deny 26261/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 26261 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 26261 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 26261' -Direction Inbound -Protocol TCP -LocalPort 26261 -Action Block
ufw
sudo ufw deny 26261/udp
iptables
sudo iptables -A INPUT -p udp --dport 26261 -j DROP
nftables
sudo nft add rule inet filter input udp dport 26261 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 26261' -Direction Inbound -Protocol UDP -LocalPort 26261 -Action Block

Related ports

26257cockroach26260ezproxy26262k3software-svr26263k3software-cli

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