Date: Sat, 6 Jul 2024 18:24:10 +0200 From: Michael Tuexen <michael.tuexen@lurchi.franken.de> To: "Patrick M. Hausen" <hausen@punkt.de> Cc: Andrea Venturoli <ml@netfence.it>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: OpenVPN suddenly working one way only Message-ID: <E3C9F79E-8074-4D41-976A-31942E0B6657@lurchi.franken.de> In-Reply-To: <AC8533A8-F877-4934-8907-6532C44D9CF7@punkt.de> References: <202407061502.466F28cR033040@gndrsh.dnsmgr.net> <dd0115c5-f07b-4f3c-8158-ed2594011890@netfence.it> <AC8533A8-F877-4934-8907-6532C44D9CF7@punkt.de>
next in thread | previous in thread | raw e-mail | index | archive | help
> On 6. Jul 2024, at 18:13, Patrick M. Hausen <hausen@punkt.de> wrote: >=20 > Hi all, >=20 >> Am 06.07.2024 um 18:07 schrieb Andrea Venturoli <ml@netfence.it>: >> It's almost surely due to a problem with the UDP packets that = implement the VPN: again, according to tcpdump they go out host B, but = never reach host A. >=20 > Is it remotely possible that one of the ISPs blocks these UDP packets = as part > of an automatic "DoS protection" mechanism? Or are any kind of NAT or Firewall involved which might loose state? Are you using public addresses on host A and B? Best regards Michael >=20 > Kind regards, > Patrick > --=20 > punkt.de GmbH > Patrick M. Hausen > .infrastructure >=20 > Sophienstr. 187 > 76185 Karlsruhe >=20 > Tel. +49 721 9109500 >=20 > https://infrastructure.punkt.de > info@punkt.de >=20 > AG Mannheim 108285 > Gesch=C3=A4ftsf=C3=BChrer: Daniel Lienert, Fabian Stein >=20
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E3C9F79E-8074-4D41-976A-31942E0B6657>