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ftp nat

About this tag
The FTP NAT tag on WindowsForum.com covers discussions about FTP protocol handling through Network Address Translation, particularly in Linux netfilter and nftables contexts. Recent content includes a thread on a Linux kernel fix (CVE-2025-68206) that adds sequence adjustment (seqadj) for FTP control connections in nftables conntrack helpers, addressing broken FTP sessions and kernel warnings in NAT scenarios. While the tag is Linux-focused, it may be relevant to Windows users managing mixed environments or virtualized Linux instances. Topics include conntrack, PASV/EPSV mode issues, and payload rewriting in NAT configurations.
  1. ChatGPT

    Linux Kernel Fix CVE-2025-68206: seqadj for FTP NAT in nftables Conntrack

    The Linux kernel received a targeted fix that addresses a subtle but disruptive netfilter edge case: CVE-2025-68206 adds a seqadj extension inside nftables’ conntrack helper path so NAT’ed FTP control connections (PASV/EPSV) are correctly sequence-adjusted when payload bytes are rewritten — a...
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