open port on windows VM

[suhaib]

Hello,

I have a dedicated server with ProxMoX with one Windows Server VM inside it with a public IP.

Inside VM the port 1433 is open but it's filtered from node.

Firewall in ProxMoX (Datacenter, node, VM0 is disabled.

nmap 1.1.1.1 -p1433

Starting Nmap 6.40 ( http://nmap.org ) at 2020-08-12 22:07 +03
sendto in send_ip_packet_sd: sendto(4, packet, 40, 0, 1.1.1.1, 16) => Operation not permitted
Offending packet: TCP 94.130.120.199:51022 > 1.1.1.1:80 A ttl=57 id=678 iplen=40  seq=0 win=1024
sendto in send_ip_packet_sd: sendto(4, packet, 44, 0, 1.1.1.1, 16) => Operation not permitted
Offending packet: TCP 94.130.120.199:51278 > 1.1.1.1:1433 S ttl=59 id=20118 iplen=44  seq=3547279225 win=1024 <mss 1460>
sendto in send_ip_packet_sd: sendto(4, packet, 44, 0, 1.1.1.1, 16) => Operation not permitted
Offending packet: TCP 94.130.120.199:51279 > 1.1.1.1:1433 S ttl=46 id=44755 iplen=44  seq=3547213688 win=1024 <mss 1460>
Nmap scan report for server.domain.com (1.1.1.1)
Host is up (0.00045s latency).
PORT     STATE    SERVICE
1433/tcp filtered ms-sql-s

1.1.1.1 = windows vm public IP
server.domain.com = windows vm hostname

traceroute -T -p 1433 1.1.1.1
traceroute to 1.1.1.1 (1.1.1.1), 30 hops max, 60 byte packets
1 gw4.plesk.ru (10.33.23.1) 0.176 ms 0.159 ms 0.200 ms
2 nsl-rr01.plesk.com (91.204.25.2) 0.441 ms 0.234 ms 0.348 ms
3 host-95-170-131-45.avantel.ru (95.170.131.45) 0.839 ms 0.861 ms 0.853 ms
4 m9-r5.inet2.ru (85.112.122.5) 42.203 ms 42.159 ms 42.431 ms
5 decix-gw.hetzner.com (80.81.192.164) 74.826 ms 74.743 ms 74.698 ms
6 * * *
7 ex9k2.dc15.fsn1.hetzner.com (213.239.245.210) 82.625 ms ex9k2.dc15.fsn1.hetzner.com (213.239.245.206) 87.392 ms 87.370 ms
8 node.domain.com (2.2.2.2) 79.195 ms 79.176 ms 79.383 ms

1.1.1.1 = windows vm public IP
2.2.2.2 = node proxmox public IP
node.domain.com = node proxmox hostname

I need to open TCP/UPD 1433 port into Windows VM

Regards.

 

[oguz]

hi,

what about the windows firewall? is it configured to allow the port?

 

[suhaib]

hi, what about the windows firewall? is it configured to allow the port?

Yes, it’s already configured and it’s accepted the request but when it’s arrived to the node it’s blocked