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Port 3527 (beserver-msg-q)

IANA assigns port 3527 to beserver-msg-q: VERITAS Backup Exec Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
beserver-msg-q TCP VERITAS Backup Exec Server Katherine Wattwood -
beserver-msg-q UDP VERITAS Backup Exec Server Katherine Wattwood -

Registry dates for this port: registered 2002-06.

Check what is listening on port 3527

Linux: is anything listening on TCP 3527?
sudo ss -tlnp 'sport = :3527'
Linux: UDP 3527
sudo ss -ulnp 'sport = :3527'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3527
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3527 '
Windows (Command Prompt)
netstat -ano | findstr :3527
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3527 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3527
From Windows
Test-NetConnection HOST -Port 3527
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3527

Block port 3527 in the firewall

ufw
sudo ufw deny 3527/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3527 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3527 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3527' -Direction Inbound -Protocol TCP -LocalPort 3527 -Action Block
ufw
sudo ufw deny 3527/udp
iptables
sudo iptables -A INPUT -p udp --dport 3527 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3527 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3527' -Direction Inbound -Protocol UDP -LocalPort 3527 -Action Block

Related ports

3525eisport3526starquiz-port3528jboss-iiop3529jboss-iiop-ssl

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