HTTPfy

Port 1113 (ltp-deepspace)

IANA assigns port 1113 to ltp-deepspace: Licklider Transmission Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ltp-deepspace TCP Licklider Transmission Protocol - RFC 5326
ltp-deepspace UDP Licklider Transmission Protocol - RFC 5326, RFC 7122
ltp-deepspace DCCP Licklider Transmission Protocol - RFC 7122

Registry dates for this port: registered 2013-11-12, last modified 2014-02-21.

Check what is listening on port 1113

Linux: is anything listening on TCP 1113?
sudo ss -tlnp 'sport = :1113'
Linux: UDP 1113
sudo ss -ulnp 'sport = :1113'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1113
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1113 '
Windows (Command Prompt)
netstat -ano | findstr :1113
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1113 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1113
From Windows
Test-NetConnection HOST -Port 1113
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1113

Block port 1113 in the firewall

ufw
sudo ufw deny 1113/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1113 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1113 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1113' -Direction Inbound -Protocol TCP -LocalPort 1113 -Action Block
ufw
sudo ufw deny 1113/udp
iptables
sudo iptables -A INPUT -p udp --dport 1113 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1113 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1113' -Direction Inbound -Protocol UDP -LocalPort 1113 -Action Block

Related ports

1111lmsocialserver1112icp1114mini-sql1115ardus-trns

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