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Port 1293 (pkt-krb-ipsec)

IANA assigns port 1293 to pkt-krb-ipsec: PKT-KRB-IPSec.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pkt-krb-ipsec TCP PKT-KRB-IPSec Nancy Davoust -
pkt-krb-ipsec UDP PKT-KRB-IPSec Nancy Davoust -

Check what is listening on port 1293

Linux: is anything listening on TCP 1293?
sudo ss -tlnp 'sport = :1293'
Linux: UDP 1293
sudo ss -ulnp 'sport = :1293'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1293
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1293 '
Windows (Command Prompt)
netstat -ano | findstr :1293
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1293 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1293
From Windows
Test-NetConnection HOST -Port 1293
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1293

Block port 1293 in the firewall

ufw
sudo ufw deny 1293/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1293 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1293 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1293' -Direction Inbound -Protocol TCP -LocalPort 1293 -Action Block
ufw
sudo ufw deny 1293/udp
iptables
sudo iptables -A INPUT -p udp --dport 1293 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1293 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1293' -Direction Inbound -Protocol UDP -LocalPort 1293 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.