HTTPfy

Port 2837 (repliweb)

IANA assigns port 2837 to repliweb: Repliweb.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
repliweb TCP Repliweb William Orme -
repliweb UDP Repliweb William Orme -

Check what is listening on port 2837

Linux: is anything listening on TCP 2837?
sudo ss -tlnp 'sport = :2837'
Linux: UDP 2837
sudo ss -ulnp 'sport = :2837'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2837
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2837 '
Windows (Command Prompt)
netstat -ano | findstr :2837
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2837 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2837
From Windows
Test-NetConnection HOST -Port 2837
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2837

Block port 2837 in the firewall

ufw
sudo ufw deny 2837/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2837 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2837 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2837' -Direction Inbound -Protocol TCP -LocalPort 2837 -Action Block
ufw
sudo ufw deny 2837/udp
iptables
sudo iptables -A INPUT -p udp --dport 2837 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2837 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2837' -Direction Inbound -Protocol UDP -LocalPort 2837 -Action Block

Related ports

2835evtp-data2836catalyst2838starbot2839nmsigport

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