Port 5222 (XMPP client)

XMPP (Jabber) client-to-server connections (ejabberd, Prosody, Openfire); also used by some push and chat services.

Registered (user) port, 1024-49151 TCP Voice, video and chat Meant to face the internet

What port 5222 is used for

XMPP (Jabber) client-to-server connections (ejabberd, Prosody, Openfire); also used by some push and chat services.

Meant to face the internet. Require STARTTLS (or 5223 direct TLS) and rate-limit in-band registration to avoid spam accounts.

Service nameProtoDescriptionAssigneeReference

xmpp-client TCP XMPP Client Connection - RFC 6120

Linux: is anything listening on TCP 5222?

sudo ss -tlnp 'sport = :5222'

Linux / macOS: which process owns the port

sudo lsof -nP -i :5222

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':5222 '

Windows (Command Prompt)

netstat -ano | findstr :5222

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5222 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 5222

From Windows

Test-NetConnection HOST -Port 5222

ufw

sudo ufw allow 5222/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 5222 -j ACCEPT

nftables

sudo nft add rule inet filter input tcp dport 5222 accept

Windows Firewall

New-NetFirewallRule -DisplayName 'Allow TCP 5222' -Direction Inbound -Protocol TCP -LocalPort 5222 -Action Allow

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.