#proxy_protocol
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《PROXY PROTOCOL Vol.1》

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#PROXY_PROTOCOL
September 24, 2026 at 12:40 AM
infosec.skyfleet.blue
CVE-2026-48840: Exim 4.99.4: PROXY-protocol uninitialised-stack information disclosure
CVE-2026-48840: Exim 4.99.4: PROXY-protocol uninitialised-stack information disclosure
Posted by Heiko Schlittermann on May 29 Dear Exim users, The Exim maintainers are releasing a security fix for CVE-2026-48840. Identifier: EXIM-Security-2026-05-19.1 (CVE-2026-48840) Type: pre-authentication information disclosure Component: Exim Affects: 4.88 (2017) through the current 4.99.3 release Corrected in: Exim 4.99.4 (exim-4.99.4) Credit: Warisjeet Singh (sin99xx) Vulnerability Details --------------------- proxy_protocol() declares hdr as an...
seclists.org
May 29, 2026 at 3:04 PM
cilium.io
🐝 New Cilium Contributor 🐝

The newest Cilium contributor is Jesse Haka

They helped add proxy protocol support for ingress controller 💪

https://github.com/cilium/cilium/pull/28194
Add proxy protocol support for ingress controller by zetaab · Pull Request #28194 · cilium/cilium
Adds support for proxy protocol in listeners using https://www.envoyproxy.io/docs/envoy/latest/configuration/listeners/listener_filters/proxy_protocol Fixes: #21438 add Ingress controller proxy pro...
github.com
November 7, 2024 at 9:51 PM
atax1a.infosec.exchange.ap.brid.gy
RE: https://infosec.exchange/@atax1a/116604505091105831

like, this is the ideal way to handle proxy_protocol, too. the frontend listener parses it out and passes a parsed struct sockaddr and the descriptor to a TLS/cleartext discriminator, which does the negotiation and SNI for the former case […]
May 22, 2026 at 2:03 AM
gslin.bsky.social
奇怪，用 tcpdump 確認 proxy_protocol 已經把 ip address 送進去了，但 backend 吃不到是怎麼樣...

https://abpe.org/@gslin/113942319676432390
February 3, 2025 at 10:32 PM
markeev.com
one problem people face when using nginx as load balancer is how to pass real client IP address to the backend servers

nginx supports ip transparency but network setup is complex

simpler way: use proxy_protocol between load balancer nginx and backend nginx!
October 4, 2025 at 6:06 PM
mima.localghost.org
Finally got all of 443 under `proxy_protocol` ​:munch:​
July 24, 2024 at 3:58 PM
its0nezero.bsky.social
I’ve published a detailed blog on the SOCKS5 protocol, focusing on its technical specifications and its significance in circumventing internet censorship.

You can read it here:
0ne-zero.github.io/blogs/explor...

#internet_censorship
#censorship
#proxy_protocol
#free_internet
#iran
Exploring SOCKS5 the Fundation of Advanced Proxy Protocols for Internet Censorship Circumvention
The Role of SOCKS5 in Defying Censorship
0ne-zero.github.io
January 22, 2025 at 8:21 AM