Date: Thu, 9 Feb 2017 18:22:23 -0500 From: Jon Radel <jon@radel.com> To: sixto areizaga <thenewcq@optimum.net>, freebsd-questions@freebsd.org Subject: Re: wireshark issue Message-ID: <c2dd4d2c-0e7c-42f0-9eef-2cb734421767@radel.com> In-Reply-To: <20170209174405.5d551b88@newer.home> References: <CAKM9q91KKxtqXRTG84Szefww%2BR--S1A7wvgSx5LV3jNS90=4qw@mail.gmail.com> <20170209174405.5d551b88@newer.home>
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This is a cryptographically signed message in MIME format. --------------ms060407000909030002060308 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2/9/17 5:44 PM, sixto areizaga wrote: > Has anyone experienced something similar or have any info about the > following using wireshark... >=20 > =20 > I was working on a webpage [that isn't up yet] no outside connections > established, I started apache [from computer #1], started wireshark > [same node] and opened firefox [computer #2] and for the url I did a > 192.168.etc.etc >=20 > looking though packets transfered there was a transfer from outside my > network - (the ip might be in China) - it used putty [with sshv2] to > get a server/client key exchange. >=20 > it looked like a mobile device running a script except using putty=20 >=20 > anyone have a similar problem?=20 Somebody already answered the first time you asked this question. Why ask again? Yes, there are people out on the Internet who constantly scan ipv4 addresses for any number of interesting servers, and that most certainly includes ssh servers. This should be obvious if you have a machine that allows for connections to port tcp/22 from the Internet at large--just look at the log of failed connection attempts or fire up a copy of wireshark. If you don't like it, block the traffic using a firewall. You can also move your ssh server to a different port, which will reduce the noise considerably and pretty predictably start an argument about "security by obscurity is not really security." Really, the only part of your question that *I* find remotely interesting is how you determined that the client is actually a copy of putty running on a mobile device, or at least looks like it is? --=20 --Jon Radel jon@radel.com --------------ms060407000909030002060308 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC Cq8wggSvMIIDl6ADAgECAhEA4CPLFRKDU4mtYW56VGdrITANBgkqhkiG9w0BAQsFADBvMQsw CQYDVQQGEwJTRTEUMBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4 dGVybmFsIFRUUCBOZXR3b3JrMSIwIAYDVQQDExlBZGRUcnVzdCBFeHRlcm5hbCBDQSBSb290 MB4XDTE0MTIyMjAwMDAwMFoXDTIwMDUzMDEwNDgzOFowgZsxCzAJBgNVBAYTAkdCMRswGQYD VQQIExJHcmVhdGVyIE1hbmNoZXN0ZXIxEDAOBgNVBAcTB1NhbGZvcmQxGjAYBgNVBAoTEUNP TU9ETyBDQSBMaW1pdGVkMUEwPwYDVQQDEzhDT01PRE8gU0hBLTI1NiBDbGllbnQgQXV0aGVu 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