https://blog.ast.moe/en/tags/networking/Recent posts: GorimuchuHugohttps://blog.ast.moe/en/blog/2026-08-18-3/Tue, 18 Aug 2026 21:23:10 +0900https://blog.ast.moe/en/blog/2026-08-18-3/<p>When testing connectivity in an environment that has IP restrictions, you may want to allow only your own source IP as an exception.</p> <p>However, the global IP address of your home connection isn’t static; it changes whenever you restart the router or for other reasons.</p> <p>Updating the allowed IP each time is cumbersome, so I use a Sakura VPS as a jump host.</p> <p>I could have set up IPsec with something like SoftEther VPN, but since SSH is available, using a SOCKS proxy is easier if everything can be done on the local PC.</p>