Safeline – Self‑Hosted Web Application Firewall (WAF) App
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Main Page: https://github.com/chaitin/safeline
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Licence: GPL-3.0 license
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Dockerfile: ?
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Summary
Safeline is a self‑hosted Web Application Firewall (WAF) designed to sit in front of your web applications and shield them from a wide range of web attacks and exploits. Acting as a reverse proxy, Safeline inspects, filters, and monitors HTTP(S) traffic before it ever reaches your apps.
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Alternative to / Similar tools
Safeline can be seen as an alternative or complement to:
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Cloudflare WAF / other SaaS WAFs
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ModSecurity / OWASP Core Rule Set
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NAXSI
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Imperva, F5 WAF, etc. (commercial solutions)
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Screenshots




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Main Page: https://github.com/chaitin/safeline
-
Licence: GPL-3.0 license
-
Dockerfile: ?
-
Summary
Safeline is a self‑hosted Web Application Firewall (WAF) designed to sit in front of your web applications and shield them from a wide range of web attacks and exploits. Acting as a reverse proxy, Safeline inspects, filters, and monitors HTTP(S) traffic before it ever reaches your apps.
-
Alternative to / Similar tools
Safeline can be seen as an alternative or complement to:
-
Cloudflare WAF / other SaaS WAFs
-
ModSecurity / OWASP Core Rule Set
-
NAXSI
-
Imperva, F5 WAF, etc. (commercial solutions)
-
Screenshots




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https://alternativeto.net/software/safeline/about/
Safeline originates from China, which is an issue IMO. -
https://alternativeto.net/software/safeline/about/
Safeline originates from China, which is an issue IMO.@RoundHouse1924 a lot of good software comes from China from
Chinese people who don't necessarily agree with their state sponsored pals.Depends who wrote it and why.
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There are some very intriguing/ interesting Chinese hackers etc living in Chiang Mai in northern Thailand see e.g. https://4thgenerationcivilization.substack.com/p/towards-civilizational-ai-our-central
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https://alternativeto.net/software/safeline/about/
Safeline originates from China, which is an issue IMO.@RoundHouse1924 I often gravitate to this thought, but then remember that what @robi says is true.
Consider Seafile as an example of an app which seems trusted.The problem is knowing the reliability.
I guess we have to rely on peer review, no. of GitHub stars, and the valiant efforts of code reviewers.It might be academic, as I asked for an AI review of feasibility of packaging for Cloudron, and it was essentially negative, too complex and not enough info about building (they assume a docker-compose deployment based on their image which is not officially published).
Someone more technical than me needs also to consider the issue of running a reverse proxy (SafeLine) in front of Cloudron's reverse proxy, especially when Safeline if packaged for Cloudron would be on same VPS as Cloudron's reverse proxy. Confused ? I sure am.
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@RoundHouse1924 I often gravitate to this thought, but then remember that what @robi says is true.
Consider Seafile as an example of an app which seems trusted.The problem is knowing the reliability.
I guess we have to rely on peer review, no. of GitHub stars, and the valiant efforts of code reviewers.It might be academic, as I asked for an AI review of feasibility of packaging for Cloudron, and it was essentially negative, too complex and not enough info about building (they assume a docker-compose deployment based on their image which is not officially published).
Someone more technical than me needs also to consider the issue of running a reverse proxy (SafeLine) in front of Cloudron's reverse proxy, especially when Safeline if packaged for Cloudron would be on same VPS as Cloudron's reverse proxy. Confused ? I sure am.
@timconsidine nesting reverse proxies is OK.
It happens already with Cloudron's Nginx and webservers that front multiple app servers in our Apps.
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I came across Safeline through a Meta Ads. The ad was run by a web dev based in Indonesia who offers a course on how to secure WordPress websites against hacking.
After reviewing the course modules listed on the landing page, I noticed that Safeline was mentioned and that it can be integrated with Cloudflare.
This caught my interest, so I decided to do some research.
I then looked into third-party benchmarks and evaluations of Safeline’s protection capabilities and found the following articles:
- https://dev.to/carrie_luo1/the-6-best-web-application-firewalls-compared-2024-1d9l
- https://medium.com/@tvvzvpb186/which-open-source-waf-really-delivers-a-head-to-head-benchmark-37631e08fb7f
Based on the benchmark data presented in those articles, Safeline appears to perform well in blocking common web application attacks.
That said, this is purely based on third-party analysis. I have not personally used Safeline in a production environment yet.
I should also mention that I am not an IT developer or sysadmin by profession. My background is primarily in digital marketing, so I fully understand that many people in this forum have far deeper technical expertise than I do.
That said, I find Safeline interesting due to its feature set and open-source offering, which prompted me to explore it further and request the app here.

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