Registered · Cross-platform

1719 H.323 RAS

TCP Yes
UDP Yes
SCTP —
DCCP —

What it is

H.323 registration/admission/status signaling.

When / why

VoIP/video gatekeeper registration.

Protocol status detail

TransportStatusMeaning
TCP Yes Assigned by IANA and standardized, specified, or widely used on this port.
UDP Yes Assigned by IANA and standardized, specified, or widely used on this port.
SCTP — Not applicable for this transport.
DCCP — Not applicable for this transport.
« 1701 L2TP 1720 H.323 call signaling »

Port range

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

Browse all ports →

Firewall rules for port 1719

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 1719

Allow TCP 1719 (H.323 RAS). Replace <source> with the network/host that should reach it.

sudo ufw allow proto udp from <source> to any port 1719

Allow UDP 1719 (H.323 RAS). 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="1719" protocol="tcp" accept'

Allow TCP 1719 (H.323 RAS) from <source>. Run 'firewall-cmd --reload' afterwards.

sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="<source>" port port="1719" protocol="udp" accept'

Allow UDP 1719 (H.323 RAS) from <source>. Run 'firewall-cmd --reload' afterwards.

nftables

nft add rule inet filter input ip saddr <source> tcp dport 1719 accept

Allow TCP 1719 (H.323 RAS). Assumes table 'inet filter' with an 'input' chain.

nft add rule inet filter input ip saddr <source> udp dport 1719 accept

Allow UDP 1719 (H.323 RAS). Assumes table 'inet filter' with an 'input' chain.

iptables

sudo iptables -A INPUT -p tcp -s <source> --dport 1719 -j ACCEPT

Allow TCP 1719 (H.323 RAS). Persist with iptables-save/netfilter-persistent.

sudo iptables -A INPUT -p udp -s <source> --dport 1719 -j ACCEPT

Allow UDP 1719 (H.323 RAS). Persist with iptables-save/netfilter-persistent.

Azure NSG

az network nsg rule create -g <resource-group> --nsg-name <nsg> -n Allow-h323ras-1719 --priority 1000 --access Allow --direction Inbound --protocol "*" --source-address-prefixes <source> --destination-port-ranges 1719

Inbound rule for 1719 (H.323 RAS). 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=1719,ToPort=1719,IpRanges="[{CidrIp=<source-cidr>}]"

Inbound TCP 1719 (H.323 RAS). Replace <source-cidr> (e.g. 10.0.0.0/16).

aws ec2 authorize-security-group-ingress --group-id <sg-id> --ip-permissions IpProtocol=udp,FromPort=1719,ToPort=1719,IpRanges="[{CidrIp=<source-cidr>}]"

Inbound UDP 1719 (H.323 RAS). Replace <source-cidr> (e.g. 10.0.0.0/16).

GCP firewall

gcloud compute firewall-rules create allow-h323ras-1719 --direction=INGRESS --action=ALLOW --rules=tcp:1719,udp:1719 --source-ranges=<source-cidr> --network=<network>

Ingress rule for 1719 (H.323 RAS). Scope with --source-ranges and optionally --target-tags.

Windows netsh

netsh advfirewall firewall add rule name="Allow H.323 RAS 1719/TCP" dir=in action=allow protocol=TCP localport=1719 remoteip=<source>

Inbound TCP 1719 (H.323 RAS). Set remoteip to a host/subnet; 'any' is discouraged.

netsh advfirewall firewall add rule name="Allow H.323 RAS 1719/UDP" dir=in action=allow protocol=UDP localport=1719 remoteip=<source>

Inbound UDP 1719 (H.323 RAS). Set remoteip to a host/subnet; 'any' is discouraged.

Windows PowerShell

New-NetFirewallRule -DisplayName "Allow H.323 RAS 1719/TCP" -Direction Inbound -Action Allow -Protocol TCP -LocalPort 1719 -RemoteAddress <source>

Inbound TCP 1719 (H.323 RAS). Replace <source> with a host or subnet.

New-NetFirewallRule -DisplayName "Allow H.323 RAS 1719/UDP" -Direction Inbound -Action Allow -Protocol UDP -LocalPort 1719 -RemoteAddress <source>

Inbound UDP 1719 (H.323 RAS). 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.