Registered · Cross-platform

5001 iperf / Synology (TLS)

TCP Unofficial
UDP
SCTP
DCCP

What it is

iperf bandwidth testing; Synology secured console.

When / why

Throughput testing and appliance management.

Protocol status detail

TransportStatusMeaning
TCP Unofficial Not assigned by IANA, but standardized, specified, or widely used on this port.
UDP Not applicable for this transport.
SCTP Not applicable for this transport.
DCCP Not applicable for this transport.

Port range

Registered (1024–49151). Assigned by IANA on request; usable without elevated privileges on most systems.

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Firewall rules for port 5001

Copy-ready inbound rules for the active transports. Replace every <source> placeholder with the specific host, subnet, or CIDR that should reach this port.

ufw

sudo ufw allow proto tcp from <source> to any port 5001

Allow TCP 5001 (iperf / Synology (TLS)). Replace <source> with the network/host that should reach it.

firewalld

sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="<source>" port port="5001" protocol="tcp" accept'

Allow TCP 5001 (iperf / Synology (TLS)) from <source>. Run 'firewall-cmd --reload' afterwards.

nftables

nft add rule inet filter input ip saddr <source> tcp dport 5001 accept

Allow TCP 5001 (iperf / Synology (TLS)). Assumes table 'inet filter' with an 'input' chain.

iptables

sudo iptables -A INPUT -p tcp -s <source> --dport 5001 -j ACCEPT

Allow TCP 5001 (iperf / Synology (TLS)). Persist with iptables-save/netfilter-persistent.

Azure NSG

az network nsg rule create -g <resource-group> --nsg-name <nsg> -n Allow-iperfsynologytls-5001 --priority 1000 --access Allow --direction Inbound --protocol TCP --source-address-prefixes <source> --destination-port-ranges 5001

Inbound rule for 5001 (iperf / Synology (TLS)). Set <source> to a CIDR; lower priority number = higher precedence.

AWS Security Group

aws ec2 authorize-security-group-ingress --group-id <sg-id> --ip-permissions IpProtocol=tcp,FromPort=5001,ToPort=5001,IpRanges="[{CidrIp=<source-cidr>}]"

Inbound TCP 5001 (iperf / Synology (TLS)). Replace <source-cidr> (e.g. 10.0.0.0/16).

GCP firewall

gcloud compute firewall-rules create allow-iperfsynologytls-5001 --direction=INGRESS --action=ALLOW --rules=tcp:5001 --source-ranges=<source-cidr> --network=<network>

Ingress rule for 5001 (iperf / Synology (TLS)). Scope with --source-ranges and optionally --target-tags.

Windows netsh

netsh advfirewall firewall add rule name="Allow iperf / Synology (TLS) 5001/TCP" dir=in action=allow protocol=TCP localport=5001 remoteip=<source>

Inbound TCP 5001 (iperf / Synology (TLS)). Set remoteip to a host/subnet; 'any' is discouraged.

Windows PowerShell

New-NetFirewallRule -DisplayName "Allow iperf / Synology (TLS) 5001/TCP" -Direction Inbound -Action Allow -Protocol TCP -LocalPort 5001 -RemoteAddress <source>

Inbound TCP 5001 (iperf / Synology (TLS)). Replace <source> with a host or subnet.

Rules are generated only for transports marked active for this port. They default to an inbound allow with an explicit source placeholder — never any. Review direction, scope, and rule precedence before applying in production.