D-Link DLS-2750U ftp firmward update

220 Ftp firmware update utility
421 Login incorrect.
421 Login incorrect.

D-Link DSL-2640B ADSL router telnetd

Login: 

HTTP/1.1 200 Ok
Server: ty_httpd
Cache-Control: no-cache
Date: Tue, 22 Sep 2026 09:37:27 GMT
Content-Type: text/html
Connection: close

HTTP/1.1 200 Ok
Server: ty_httpd
Cache-Control: no-cache
Date: Mon, 21 Sep 2026 00:13:15 GMT
Content-Type: text/html
Connection: close

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 0 (0x0)
        Signature Algorithm: md5WithRSAEncryption
        Issuer: C=UA, ST=Califonia, L=Irvine, O=Broadcom, OU=Broadband, CN=Daniel/emailAddress=kiding@broadcom.com
        Validity
            Not Before: Aug  7 23:31:21 2006 GMT
            Not After : Sep  6 23:31:21 2006 GMT
        Subject: C=UA, ST=Califonia, L=Irvine, O=Broadcom, OU=Broadband, CN=Daniel/emailAddress=kiding@broadcom.com
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (1024 bit)
                Modulus:
                    ea:04:6a:79:ac:a7:c6:f4:6d:42:a2:23:b2:9e:48:42:
                    b4:af:a8:d4:bc:a9:8f:fc:3a:0f:c3:66:cc:1f:cb:9f:
                    53:73:6b:32:b5:31:8a:a4:d6:63:0d:61:7f:6d:53:f6:
                    86:7f:ef:95:75:37:82:8f:1c:4f:17:5e:e3:0b:80:06:
                    88:84:14:b5:ca:78:f6:86:bc:ea:ac:ae:fe:b9:5a:7e:
                    b5:5e:d3:c7:08:3c:c3:f5:e8:31:16:9c:31:12:d5:93:
                    de:16:78:21:f0:0b:9e:f8:b0:8a:b9:e0:45:f4:02:1e:
                    86:98:ee:03:d3:8e:49:e3:18:93:e7:de:70:07:bc:ed
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Subject Key Identifier: 
                34:C9:B0:99:70:F1:C9:10:BB:77:56:87:94:86:95:70:10:D3:71:02
            X509v3 Authority Key Identifier: 
                keyid:34:C9:B0:99:70:F1:C9:10:BB:77:56:87:94:86:95:70:10:D3:71:02
                DirName:/C=UA/ST=Califonia/L=Irvine/O=Broadcom/OU=Broadband/CN=Daniel/emailAddress=kiding@broadcom.com
                serial:0
            X509v3 Basic Constraints: 
                CA:TRUE
    Signature Algorithm: md5WithRSAEncryption
    Signature Value:
        b2:ce:8e:6a:56:9e:46:30:e9:86:5b:ea:97:49:ae:82:39:92:a7:bd:d6:11:85:e6:
        08:13:86:2c:db:ef:25:89:88:e0:36:ad:cb:b5:57:b3:61:dc:ff:8f:e5:3d:2d:7e:
        1b:64:2b:cd:fa:fc:1c:53:36:82:b0:ae:a4:5e:4c:0d:1f:a0:38:b0:78:f5:59:a1:
        91:92:85:02:52:8c:00:8b:39:19:5e:a6:12:39:6c:ea:0d:6b:79:e2:61:9c:dc:cd:
        eb:73:13:cf:3a:a8:7e:79:7f:6a:6e:5f:81:a1:7e:5a:e6:dd:81:af:3f:ca:81:ab:
        f4:03:77:20:a9:ce:54:e9