From: "Roderick Klein" Received: from [192.168.100.201] (HELO mail.2rosenthals.com) by 2rosenthals.com (CommuniGate Pro SMTP 5.4.10) with ESMTP id 640134 for ecs-isp@2rosenthals.com; Wed, 04 Feb 2026 08:15:29 -0500 Received: from secmgr-va.2rosenthals.com ([50.73.8.217]:60882 helo=mail2.2rosenthals.com) by mail.2rosenthals.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vncj9-000000000oP-1cRf for ecs-isp@2rosenthals.com; Wed, 04 Feb 2026 08:15:28 -0500 Received: from ewsoutbound.kpnmail.nl ([195.121.94.184]:38551) by mail2.2rosenthals.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vncj6-000000005wg-1Urs for ecs-isp@2rosenthals.com; Wed, 04 Feb 2026 08:15:25 -0500 X-KPN-MessageId: 9040142c-01cb-11f1-afc9-005056994fde Received: from smtp.kpnmail.nl (unknown [10.31.155.8]) by ewsoutbound.so.kpn.org (Halon) with ESMTPS id 9040142c-01cb-11f1-afc9-005056994fde; Wed, 04 Feb 2026 14:15:23 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xs4all.nl; s=xs4all01; h=content-type:from:to:subject:mime-version:date:message-id; bh=+KfS9BjjiovtLMrWqMi0wTopQnzL0tUBlySNYR/EtjM=; b=K1twzWxQOMUxMywUvwLX4rbUdepC6cNRvS5+L3PLbwBfHSLUPH3LeACylaGbWRNmFl32CMxGVBJC4 GHY1MEWgCz6tv8HGDy8gW237vDFS6x57+Zi4fSxxeLZInmrchqE/WW8FEMgJTAB3ZJxTLhBpKpxUzW lYAa0DOtwvBaPwsvoJ2FZoJ1VQ2XFO82ooT/GLl7GHQGnhnTwroJHnKaPXvjtUgCgbi53o5aqgozMP Sq9cjTaOz8qu9vHpa+ecQ2g8sg8hVAFaNn0jVChg5YrBzw6wsiDFVstvj9B0C2NCqTW1TkjTsxNkww EA6IuwI8EmEKyLEoG5F6tWlm212QFGw== X-KPN-MID: 33|V5gCDxXuqZMmnItIDL3fjrffSo40q+bfh547UZUh/K7JeJkuzAUq2XmV+SRkD/Z 66+ymhWJQYidHEfQ0l7USlCrE6cS6fvkOIQQ1rmo4MPg= X-KPN-VerifiedSender: Yes X-CMASSUN: 33|JTI0nO2WuU7acXso4Lro8KaXhFpLwjGhBot5rstQ7th9F/dO6kF2izBYWRpnUMR Eorx8k609p3ppOorJyF+7NA== X-Originating-IP: 45.138.54.154 Received: from [192.168.243.144] (smcc.connected.by.freedominter.net [45.138.54.154]) by smtp.xs4all.nl (Halon) with ESMTPSA id 900416f0-01cb-11f1-9bfa-00505699d6e5; Wed, 04 Feb 2026 14:15:23 +0100 (CET) Message-ID: <2864e03b-ae08-4d87-be80-258d5f810e55@xs4all.nl> Date: Wed, 4 Feb 2026 14:15:22 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [eCS-ISP] DDOS attacks and tcp/ip SYNCOOKIE flag To: eCS ISP Mailing List References: Content-Language: nl In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit