Registered · Cross-platform

8448 Matrix federation

TCP Yes
UDP
SCTP
DCCP

What it is

Matrix homeserver federation over HTTPS.

When / why

Inter-server Matrix chat.

Protocol status detail

TransportStatusMeaning
TCP Yes Assigned by IANA and 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 8448

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 8448

Allow TCP 8448 (Matrix federation). 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="8448" protocol="tcp" accept'

Allow TCP 8448 (Matrix federation) from <source>. Run 'firewall-cmd --reload' afterwards.

nftables

nft add rule inet filter input ip saddr <source> tcp dport 8448 accept

Allow TCP 8448 (Matrix federation). Assumes table 'inet filter' with an 'input' chain.

iptables

sudo iptables -A INPUT -p tcp -s <source> --dport 8448 -j ACCEPT

Allow TCP 8448 (Matrix federation). Persist with iptables-save/netfilter-persistent.

Azure NSG

az network nsg rule create -g <resource-group> --nsg-name <nsg> -n Allow-matrixfederation-8448 --priority 1000 --access Allow --direction Inbound --protocol TCP --source-address-prefixes <source> --destination-port-ranges 8448

Inbound rule for 8448 (Matrix federation). 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=8448,ToPort=8448,IpRanges="[{CidrIp=<source-cidr>}]"

Inbound TCP 8448 (Matrix federation). Replace <source-cidr> (e.g. 10.0.0.0/16).

GCP firewall

gcloud compute firewall-rules create allow-matrixfederation-8448 --direction=INGRESS --action=ALLOW --rules=tcp:8448 --source-ranges=<source-cidr> --network=<network>

Ingress rule for 8448 (Matrix federation). Scope with --source-ranges and optionally --target-tags.

Windows netsh

netsh advfirewall firewall add rule name="Allow Matrix federation 8448/TCP" dir=in action=allow protocol=TCP localport=8448 remoteip=<source>

Inbound TCP 8448 (Matrix federation). Set remoteip to a host/subnet; 'any' is discouraged.

Windows PowerShell

New-NetFirewallRule -DisplayName "Allow Matrix federation 8448/TCP" -Direction Inbound -Action Allow -Protocol TCP -LocalPort 8448 -RemoteAddress <source>

Inbound TCP 8448 (Matrix federation). 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.