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Fri, 18 Dec 2020 21:05:22 +0000 Received: by smtp423.mail.gq1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 270b1346b0fde1440c335a29b46a0c08; Fri, 18 Dec 2020 21:05:20 +0000 (UTC) To: cygwin cygwin From: Charles Russell Subject: Re: Cygwin sshd broken by seemingly trivial network change Message-ID: Date: Fri, 18 Dec 2020 15:05:18 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit References: X-Mailer: WebService/1.1.17278 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Apache-HttpAsyncClient/4.1.4 (Java/11.0.8) X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Dec 2020 21:05:26 -0000 SOLVED On 12/17/2020 3:24 PM, Erik Soderquist wrote: > in some cases I could not find any real > issue, but deleting and recreating the rules fixed the issue. That did the trick: simply deleting and reinstating the firewall settings for sshd solved the problem on both computers. I had trouble deleting them initially, but this worked: Select control panel; windows firewall; advanced settings (If you have done something else under windows firewall before selecting advanced settings, you may not be asked for an administrative password. In that case, go back to control panel and start over.) Now select sshd, and in the right hand "actions" panel will appear an option to delete it. After deletion, go back to Allow a Program through Windows Firewall, then reinstall it. (Windows would not let me do this until after rebooting, which I found out the hard way. Instead of a message, it would just beep with each letter while I entered the administrative password, and then reject the password. One of the nicest things about Cygwin is keeping Windows at arm's length.) These steps fixed the problem on both computers. Why the minor network change precipitated the problem remains a mystery.