https://blog.cui.to/en/post/category/systems-networking/ Samuel N Cui’s personal blog: technology, projects and life. en-US https://blog.cui.to/en/post/ip-rule-fwmark-not-working/ https://blog.cui.to/en/post/ip-rule-fwmark-not-working/ Mon, 30 May 2022 14:48:22 +0800 Documents a policy-routing setup that failed to respond to iptables marks, including the fwmark_reflect and rp_filter changes that made it work and the accompanying configuration example. https://blog.cui.to/en/post/nginx-port_in_redirect-%E9%80%89%E9%A1%B9%E7%9A%84%E7%94%A8%E5%A4%84/ https://blog.cui.to/en/post/nginx-port_in_redirect-%E9%80%89%E9%A1%B9%E7%9A%84%E7%94%A8%E5%A4%84/ Thu, 30 Nov 2017 11:55:59 +0800 A brief nginx configuration note on removing unwanted port numbers from trailing-slash redirects when a request passes through two proxy layers. https://blog.cui.to/en/post/ss-%E5%BC%95%E5%AF%BC%E5%BC%8F%E8%87%AA%E5%8A%A8%E5%AE%89%E8%A3%85%E8%84%9A%E6%9C%AC/ https://blog.cui.to/en/post/ss-%E5%BC%95%E5%AF%BC%E5%BC%8F%E8%87%AA%E5%8A%A8%E5%AE%89%E8%A3%85%E8%84%9A%E6%9C%AC/ Wed, 01 Feb 2017 23:02:36 +0800 Introduces a guided Shadowsocks setup script for Ubuntu Server VPS hosts, combining installation with BBR, TCP tuning, daemon supervision and routine maintenance instead of leaving those steps to separate manual configuration. https://blog.cui.to/en/post/windows-nt-fonts-fallback-about-wtp-and-itunes/ https://blog.cui.to/en/post/windows-nt-fonts-fallback-about-wtp-and-itunes/ Wed, 21 Jan 2015 01:00:23 +0800 Traces distorted Chinese text in iTunes on Windows Thin PC to incomplete font fallback settings, then describes restoring those settings from a working Windows 7 computer. https://blog.cui.to/en/post/how-goagent-automatic-minimize/ https://blog.cui.to/en/post/how-goagent-automatic-minimize/ Sat, 09 Nov 2013 19:29:28 +0800 Configuration notes for making Goagent start minimized and launch with Windows, including the administrator privileges needed for its initial SSL certificate installation. https://blog.cui.to/en/post/%E5%A6%82%E4%BD%95%E5%8F%96%E6%B6%88%E6%9F%90%E4%B8%AA%E7%89%B9%E5%AE%9A%E7%9A%84%E8%BD%AF%E4%BB%B6%E7%9A%84%E7%94%A8%E6%88%B7%E8%B4%A6%E6%88%B7%E6%8E%A7%E5%88%B6-%E8%BD%AC/ https://blog.cui.to/en/post/%E5%A6%82%E4%BD%95%E5%8F%96%E6%B6%88%E6%9F%90%E4%B8%AA%E7%89%B9%E5%AE%9A%E7%9A%84%E8%BD%AF%E4%BB%B6%E7%9A%84%E7%94%A8%E6%88%B7%E8%B4%A6%E6%88%B7%E6%8E%A7%E5%88%B6-%E8%BD%AC/ Tue, 29 Oct 2013 09:19:41 +0800 A reposted Windows 7 registry tip using RunAsInvoker for programs that do not modify system files or settings, while leaving system-wide User Account Control enabled. https://blog.cui.to/en/post/%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3rc-local%E4%B8%AD%E4%BB%BB%E5%8A%A1%E5%9C%A8%E5%BC%80%E6%9C%BA%E4%B8%80%E6%AE%B5%E6%97%B6%E9%97%B4%E5%90%8E%E5%81%9C%E6%AD%A2%E7%9A%84%E9%97%AE%E9%A2%98/ https://blog.cui.to/en/post/%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3rc-local%E4%B8%AD%E4%BB%BB%E5%8A%A1%E5%9C%A8%E5%BC%80%E6%9C%BA%E4%B8%80%E6%AE%B5%E6%97%B6%E9%97%B4%E5%90%8E%E5%81%9C%E6%AD%A2%E7%9A%84%E9%97%AE%E9%A2%98/ Sat, 31 Aug 2013 21:23:10 +0800 Using a DNSPod DDNS script as the example, this troubleshooting note traces an rc.local task’s unexpected exit to the shell’s -e option and records the workaround used. https://blog.cui.to/en/post/ubuntu-postfix-let-cpu-high/ https://blog.cui.to/en/post/ubuntu-postfix-let-cpu-high/ Wed, 24 Jul 2013 21:11:26 +0800 An investigation into high server load uncovers over ten thousand spam messages in the Postfix queue and missing SMTP authentication—a lesson in checking mail-server security settings. https://blog.cui.to/en/post/%E5%A6%82%E4%BD%95%E4%BD%BFz-push%E6%94%AF%E6%8C%81%E4%B8%AD%E6%96%87vcarddir/ https://blog.cui.to/en/post/%E5%A6%82%E4%BD%95%E4%BD%BFz-push%E6%94%AF%E6%8C%81%E4%B8%AD%E6%96%87vcarddir/ Mon, 22 Jul 2013 02:39:00 +0800 Troubleshooting garbled Chinese in Z-push’s VCardDir by bypassing an unnecessary character conversion. The separate problem of naming VCard files for entries added on a phone remains unresolved.