Registered · Cross-platform

1494 Citrix ICA

TCP Unofficial
UDP
SCTP
DCCP

What it is

Citrix Independent Computing Architecture.

When / why

Citrix published-app/desktop sessions.

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 1494

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 1494

Allow TCP 1494 (Citrix ICA). 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="1494" protocol="tcp" accept'

Allow TCP 1494 (Citrix ICA) from <source>. Run 'firewall-cmd --reload' afterwards.

nftables

nft add rule inet filter input ip saddr <source> tcp dport 1494 accept

Allow TCP 1494 (Citrix ICA). Assumes table 'inet filter' with an 'input' chain.

iptables

sudo iptables -A INPUT -p tcp -s <source> --dport 1494 -j ACCEPT

Allow TCP 1494 (Citrix ICA). Persist with iptables-save/netfilter-persistent.

Azure NSG

az network nsg rule create -g <resource-group> --nsg-name <nsg> -n Allow-citrixica-1494 --priority 1000 --access Allow --direction Inbound --protocol TCP --source-address-prefixes <source> --destination-port-ranges 1494

Inbound rule for 1494 (Citrix ICA). 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=1494,ToPort=1494,IpRanges="[{CidrIp=<source-cidr>}]"

Inbound TCP 1494 (Citrix ICA). Replace <source-cidr> (e.g. 10.0.0.0/16).

GCP firewall

gcloud compute firewall-rules create allow-citrixica-1494 --direction=INGRESS --action=ALLOW --rules=tcp:1494 --source-ranges=<source-cidr> --network=<network>

Ingress rule for 1494 (Citrix ICA). Scope with --source-ranges and optionally --target-tags.

Windows netsh

netsh advfirewall firewall add rule name="Allow Citrix ICA 1494/TCP" dir=in action=allow protocol=TCP localport=1494 remoteip=<source>

Inbound TCP 1494 (Citrix ICA). Set remoteip to a host/subnet; 'any' is discouraged.

Windows PowerShell

New-NetFirewallRule -DisplayName "Allow Citrix ICA 1494/TCP" -Direction Inbound -Action Allow -Protocol TCP -LocalPort 1494 -RemoteAddress <source>

Inbound TCP 1494 (Citrix ICA). 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.