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Port 6997 (MobilitySrv)

IANA assigns port 6997 to MobilitySrv: Mobility XE Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
MobilitySrv TCP Mobility XE Protocol Joseph T Savarese -
MobilitySrv UDP Mobility XE Protocol Joseph T Savarese -

Registry dates for this port: registered 2007-06.

Check what is listening on port 6997

Linux: is anything listening on TCP 6997?
sudo ss -tlnp 'sport = :6997'
Linux: UDP 6997
sudo ss -ulnp 'sport = :6997'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6997
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6997 '
Windows (Command Prompt)
netstat -ano | findstr :6997
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6997 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6997
From Windows
Test-NetConnection HOST -Port 6997
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6997

Block port 6997 in the firewall

ufw
sudo ufw deny 6997/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6997 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6997 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6997' -Direction Inbound -Protocol TCP -LocalPort 6997 -Action Block
ufw
sudo ufw deny 6997/udp
iptables
sudo iptables -A INPUT -p udp --dport 6997 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6997 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6997' -Direction Inbound -Protocol UDP -LocalPort 6997 -Action Block

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