By R Lutken
After implementing a cloud firewall using Digital Ocean Firewall (DOF) console, my pptpd server will no longer connect to clients. As soon as the DOF is unassigned from the droplet the pptpd service connects perfectly.
I am connecting from a Win 10 machine over pptpd with a user name and password.
There seems to be an error thrown when I call service pptpd status
pptpd[2074]: GRE: read(fd=6,buffer=611660,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check
[2074]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
I’ve also tried opening port 1723 on both TCP / UDP incoming and outgoing to no avail Custom TCP 1723 All IPv4 All IPv6
What I assume is happening is that the cloud firewall is taking over the IPTABLE rules which allows pptpd to allow the connection through.
Become a contributor for community
Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.
DigitalOcean Documentation
Full documentation for every DigitalOcean product.
Resources for startups and AI-native businesses
The Wave has everything you need to know about building a business, from raising funding to marketing your product.
The developer cloud
Scale up as you grow — whether you're running one virtual machine or ten thousand.
Start building today
From GPU-powered inference and Kubernetes to managed databases and storage, get everything you need to build, scale, and deploy intelligent applications.
