Can someone please check why my ftp connection times out?

[GCPsurvivor]

Hello,

I can't connect to gcp ftp on my instance. the connection times out/closes.

Here's what I've done:

I installed proftpd on my instance.

 I opened port 21 to listen to my ip range (in iptables)

I whitelisted my ip range in iptables for both incoming and ougoing connections

I whitelisted my ip range in GCP firewall rules (ingress and egress).

I created 2 connections in connectors (these show an error of "connectin closed"

my FTP SERVER is running and listening. However, these commands time out:

telnet xxx.xxx.xxx.xx 21

nc -vz xxx.xxx.xxx.xx 21

Filezilla also time out.

I even opened and whitelisted port 20:

# iptables -I INPUT -p tcp --sport 20 -j ACCEPT

I also opened incoming connections to a randomly-generated port on the server computer:

IPTABLES_MODULES="ip_conntrack_ftp" (in iptables-config)

I have installed the same instance on a local computer with same configurations and I could ftp.

only thing I didn't provide to this instance is Aspirin

Can someone please from google check the nic for this instance, some card might be disconnected.

I welcome any help from anyone.

Thank you in advance

[DamianS]

Hi @GCPsurvivor ,

Noone from Google will check your case based on post here. This is community, not official Support Site. If you need Google's support help , open support case. Did you've checked logs ? Flow logs for subnet are enabled ? What is your OS ? Did you've tried to flush IPTABLES, and try sftp connection without IPTABLES? 

cheers,

DamianS