alone_Lagee

-  If the wireless client is unable to connect to the AP, it may be because of wireless connectivity problems.
What factors can affect your ability to connect hosts using RF?
a. Not all wireless standards are compatible. The 802.11a (5 GHz band) is not compatible with the
802.11b/g/n standards (2.4 GHz band). Within the 2.4 GHz band, each standard uses different
technology. Unless specifically configured, equipment that conforms to one standard may not function
with that conforming to another.
b. Each wireless conversation must occur on a separate, non-overlapping channel. Some AP devices can
be configured to select the least congested or highest throughput channel. Although automatic settings
work, manual setting of the AP channel provides greater control and may be necessary in some
environments.
c. The strength of an RF signal decreases with distance. If the signal strength is too low, devices will be
unable to reliably associate and move data. The signal may be dropped. The NIC client utility can be
used to display the signal strength and connection quality.
d. RF signals are susceptible to interference from outside sources, including other devices functioning on
the same frequency. A site survey should be used to detect for this.
e. APs share the available bandwidth between devices. As more devices associate with the AP, the
bandwidth for each individual device will decrease causing network performance problems. The solution
is to reduce the number of wireless clients using each channel.
- Modern WLANs incorporate various technologies to help secure the data on the WLAN: incorrect
configuration of any of these can prevent communication. List three.
a. the SSID
b. authentication
c. encryption.

kesimpulan dari lab ini adalah:
- Jika wireless client tidak dapat terhubung ke AP, itu mungkin karena masalah konektivitas nirkabel.Faktor-faktor apa yang dapat mempengaruhi kemampuan Anda untuk terhubung host menggunakan RF?a. Tidak semua standar nirkabel yang kompatibel. The 802.11a (5 GHz) tidak kompatibel dengan
802.11b/g/n standar (2,4 GHz). Dalam pita 2,4 GHz, menggunakan setiap standar yang berbeda
teknologi. Kecuali khusus dikonfigurasi, peralatan yang sesuai dengan satu standar tidak dapat berfungsi
dengan yang sesuai dengan yang lain.
b. Setiap percakapan nirkabel harus terjadi pada saluran yang terpisah, tidak tumpang tindih. Beberapa AP perangkat dapat dikonfigurasi untuk memilih paling padat atau saluran throughput tertinggi. Meskipun pengaturan otomatis kerja, petunjuk pengaturan saluran AP memberikan kontrol yang lebih besar dan mungkin diperlukan dalam beberapa lingkungan.
c. Kekuatan sinyal RF menurun dengan jarak. Jika kekuatan sinyal terlalu rendah, perangkat akan
tidak dapat data andal asosiasi dan bergerak. Sinyal dapat dihapus. Utilitas klien NIC dapat
digunakan untuk menampilkan kekuatan sinyal dan kualitas koneksi.
d. Sinyal RF rentan terhadap gangguan dari sumber luar, termasuk perangkat lain yang berfungsi pada
frekuensi yang sama. Sebuah survei situs harus digunakan untuk mendeteksi untuk ini.
e. AP berbagi bandwidth yang tersedia antar perangkat. Sebagai perangkat lebih diasosiasikan dengan AP,
bandwidth untuk setiap perangkat individu akan menurun menyebabkan masalah kinerja jaringan. Solusinya
adalah untuk mengurangi jumlah klien nirkabel menggunakan setiap saluran.- Modern WLAN menggabungkan berbagai teknologi untuk membantu mengamankan data pada WLAN: salah konfigurasi salah satu dapat mencegah komunikasi. Daftar tiga.a. SSID
b. otentikasi
c. enkripsi.

conclution of this Lab are:

-  What type of troubleshooting technique is your best option when troubleshooting wireless networks, wired networks and networks that use both?
A divide-and -conquer technique 
- What do inactive LEDs potently indicate?
a. device failure
b. port failure
c. cabling issues. 
- You are troubleshooting a Linksys ISR. What do the following LED lights indicate?
Solid Green –
Solid green indicates that a device is plugged into the port but no traffic is flowing.
Flashing Green –
Flashing green indicates the device is plugged in and receiving traffic.
Amber –
Amber indicates the device is making adjustments to the way the port is operating.
No Light –
No light indicates that nothing is plugged into the port, or there is an issue with the wired or wireless connection. 
- There are several issues to watch for in cabling. List and explain each.
a. Be sure to use the correct type of cable. Two types of TP cables are commonly encountered in networking: Straight-through cables and Cross-over cables. Using the wrong type of cable may prevent connectivity.
b. Improper cable termination is one of the main problems encountered in networks. To avoid this,cables should be terminated according to standards. Terminate cables via 568A or 568B termination standard Avoid untwisting too much cable during termination Crimp connectors on the cable jacket to provide strain relief
c. Maximum cable run lengths exist based on characteristics of the different cables. Exceeding these run lengths can have a serious negative impact on network performance.
d. If connectivity is a problem, verify that the correct ports are being used between the networking devices.
e. Protect cables and connectors from physical damage. Support cables to prevent strain on connectors  and run cable through areas that will not be in the way.


  Kesimpulan dari lab actifity ini adalah:
- Apa jenis teknik pemecahan masalah merupakan pilihan terbaik anda ketika troubleshooting jaringan nirkabel, kabel jaringan dan jaringan yang menggunakan keduanya?membagi-dan-menaklukkan teknik- Apa yang tidak aktif potently LED menunjukkan?a. kegagalan perangkatb. port kegagalanc. kabel isu.- Anda adalah sebuah masalah ISR Linksys. Apa lampu LED berikut menunjukkan?Solid Green -Solid hijau menunjukkan bahwa perangkat dicolokkan ke port tapi lalu lintas tidak mengalir.Hijau berkedip -Berkedip hijau menandakan perangkat tersambung dan menerima lalu lintas.Amber -Amber menunjukkan perangkat ini membuat penyesuaian dengan cara port operasi.Light Tidak -Tidak ada cahaya menunjukkan bahwa tidak ada yang terhubung ke pelabuhan, atau ada masalah dengan kabel atau nirkabel koneksi.- Ada beberapa isu untuk menonton dalam kabel. Daftar dan jelaskan masing-masing.
a. Pastikan untuk menggunakan jenis kabel yang benar. Dua jenis kabel TP yang biasa ditemui dijaringan: Straight-melalui kabel dan Cross-over kabel. Menggunakan jenis kabel yang salah dapat mencegah konektivitas.b. terminasi kabel yang tidak benar adalah salah satu masalah utama yang dihadapi dalam jaringan. Untuk menghindari hal ini, kabel harus diakhiri sesuai dengan standar.Hentikan kabel melalui standar pengakhiran 568A atau 568B Hindari terlalu banyak menguraikan kabel selama pemutusan Crimp konektor di jaket kabel untuk menyediakan bantuan strainc. Maksimum panjang kabel menjalankan ada berdasarkan karakteristik kabel yang berbeda. Lebih menjalankan ini panjang dapat memiliki dampak negatif serius pada kinerja jaringan.d. Jika konektivitas masalah, pastikan bahwa port yang benar yang sedang digunakan antara networking perangkat.e. Melindungi kabel dan konektor dari kerusakan fisik. kabel Dukungan untuk mencegah ketegangan pada konektor dan jalankan kabel melalui daerah yang tidak akan di jalan.

c. Terima default komputer akan dipindai. Periksa De-pilih untuk IIS dan kerentanan SQL administrasi, karena layanan ini tidak mungkin yang harus diinstal pada komputer yang sedang dipindai. Klik Start Scan

Langkah 5: pembaruan keamanan Lihat hasil scan
a. Lihat laporan keamanan. Apa hasil dari update keamanan scan??(office security update, windows security update, my SQL security update)

b. Jika ada Xs merah atau kuning, klik Bagaimana memperbaiki hal ini. Solusi mana yang direkomendasikan?(klik” how to connect this” maka jalankan recomendasinya)
c. Apakah ada masalah keamanan apapun dengan Makro Keamanan untuk salah satu dari mereka?(ada)
Langkah 8: Scan server, jika tersedia
a. Jika server dengan berbagai layanan yang tersedia, klik Pick komputer untuk memindai dari layar MBSA utama dan masukkan alamat IP dari server, dan kemudian klik Start Scan. kerentanan keamanan yang telah diidentifikasi?(IE zone)
b. Apakah ada layanan berpotensi tidak perlu diinstal? Yang nomor port yang mereka pada?
(ada)


Langkah 9: Uninstall MBSA menggunakan Control Panel Add / Remove Programs
a. Langkah ini adalah opsional, tergantung pada apakah tuan rumah akan secara otomatis dikembalikan kemudian oleh proses jaringan.
b. Untuk uninstall MBSA, klik Start> Control Panel> Add / Remove Programs. Cari aplikasi MBSA dan uninstall itu. Ini harus tercantum sebagai Microsoft Baseline Security Analyzer 2.0.1. Klik Hapus, kemudian klik Ya untuk mengkonfirmasi penghapusan aplikasi MBSA. Setelah selesai, tutup semua jendela untuk kembali ke desktop


Langkah 10: Refleksi
a. MBSA Alat ini dirancang untuk mengidentifikasi kerentanan untuk komputer berbasis Windows. Cari di Internet untuk alat lain yang mungkin ada. Daftar beberapa alat ditemukan.
isinya:

Isinya:

·         Security Scanning Services@ (28)

See also:

·         Computers: Security: Malicious Software (269)

·         Computers: Security: Malicious Software: Spyware and Adware: Detection and Removal Tools (60)

·         Computers: Software: Internet: Network Management (39)

·         Nessus - Security scanner for Linux, BSD, Solaris, and other flavors of Unix. Performs over 900 remote security checks, and suggests solutions for security problems.

·         Nmap - Developers of NMAP, a network port scanner and service detector offering stealth SYN scan, ping sweep, FTP bounce, UDP scan and operating system fingerprinting. Downloads, documentation, security tools directory and a mailing lists archive. [Windows, MacOS, Unix]

·         Acunetix Web Vulnerability Scanner - Scans for common security vulnerabilities such as SQL injection, cross site scripting and other web vulnerabilities.

·         Angry IP Scanner - A freeware IP scanner for Windows. Display NetBIOS information, MAC address; save result to CSV, TXT, HTML or XML file.

·         AppDetective - Penetration testing scanner that locates and assesses the strength of databases and web applications within your network.

·         Arirang - A webserver security scanner based on twwwscan.

·         Atelier Web Security Port Scanner - TCP, UDP, NetBios scanner.

·         Attack Tool Kit Project - An open-source utility to realize vulnerability checks and enhance security audits.

·         Auto IP Scanner - Scan your PC for open ports ( Http, Https, Ftp, Dns, MySql, Imap, Smtp, Pop, Dc++, Irc).

·         AutoScan - Am application designed to explore and to manage your network. Entire subnets can be scanned simultaneously without human intervention. OS detection, automatic network discovery, a port scanner, a Samba share browser, and the ability to save the network state.

·         Beyond Security - Vulnerability assessment of internal networks or Intranets using an automated scanning server.

·         CXL Ltd. - Provides details of AZScan, a non-intrusive software tool which will review the security Oracle and Unix, OS400 and OpenVMS systems.

·         Cum Security Toolkit (cst) - Contains a cgi script scanner with 11 anti-IDS tactics and +2200 vulnerable scripts in the database; and a port scanner with banner grabber.

·         Domino HTTP security scanner - Security scan for Domino web servers.

·         DominoDig - Audits Lotus Domino web servers. Produces an HTML report that provides a list of all the unique .nsf databases it was able to access, as well as IP addresses and email addresses.

·         Filterrules - Description and download of the GPL-licensed firewall testing and documentation tool.

·         FusionVM Enterprise - FusionVM from Critical Watch automates the process of proactively managing network vulnerabilities and exposures. It enables a unified corporate process that is enterprise-wide, repeatable and measureable.

·         GFI LANguard - Provides information such as service pack level of the machine, missing security patches, open shares, open ports, services/applications active on the computer, key registry entries, and weak passwords. Remotely install security patches and service packs.

·         Gherkin - Free security scan manager incorporating Nessus vulnerability scanning, dns and nmb lookup, host resolving, and nmap fingerprinting and scanning.

·         HFNetChkPro - Patch management tool scans Microsoft servers and desktops. Schedule and immediate remote patch scans and installations. Freeware and command-line versions available.

·         IIS Vulnerability Scanner ver 1.0 - Contains 1700+ server and file checks including hundreds of unicode and directory traversal vulnerability checks for IIS.

·         IP Range Scanner - This tool enables the user to retrieve a list of computer host names, logon account names, MS IIS service status, and/or determine the use of non-LocalSystem accounts (used to start services).

·         IPSonar - IPsonar maps and provides risk assessment to network assets.

·         IPaudit vulnerability scans - Check open ports on vulnerabilities.

·         ISS - Internet Scanner Tool. Performs scheduled and selective probes of communication services, operating systems, applications and routers to uncover and report systems vulnerabilities that might be open to attack.

·         Immunity Canvas - Tests for over 50 exploits. Licenses include full source code.

·         Infiltration Systems - Network security scanning software for detecting, auditing, and fixing network security exploits and vulnerabilities.

·         Inguama - A free penetration testing and vulnerability discovery toolkit entirely written in python.

·         Joomla! Security/Vulnerability Scanner - Signature based scanner that can detect Joomla vulnerabilities.

·         MaxPatrol Security Scanner - Network security and web-application scanner with prediction capabilities.

·         MegaPing scanner - TCP and UDP portscanner and NetBIOS scanner, Displays installed service packs, open TCP and UDP ports, missing security patches.

·         N-Stealth Security Scanner - Vulnerability-assessment product that scans web servers to identify security problems and weaknesses on local and remote web servers. Commercial and free editions are available.

·         NGSSoftware - Security scanners and assessment tools for Oracle, Domino, and SQL Server. Checks for weak passwords and vulnerability to SQL injection and cross-site scripting.

·         NScan - It includes network/host scanner, a set of additional features currently limited to whois and traceroute and numerous options to fully customize the scan process.

·         Network Analyzing - Network scanning and auditing software which scans your network or webserver for over 20,000 exploits.

·         Network Scanning Software - Network scanning and auditing software which scans your network computers for vulnerabilities, exploits, and information enumerations.

·         Network Security Audit Tools and Vulnerability Scanner - Network security and vulnerability scanner, password and product key recovery software.

·         Nikto - A web server scanner which performs tests against web servers for multiple items, including over 2200 potentially dangerous files/CGIs, versions on over 140 servers, and problems on over 210 servers.

·         Online Security Check - Free firewall, privacy and browser security test.

·         Online Vulnerability assessment ASP with graphical network display, updated daily - Online vulnerability scanner which scans for SANS "top ten" vulnerabilities.

·         PCMantra - Registry Cleaner, Anti Spyware - Offers privacy software for disk management and registry cleaning, anti-spyware and spam filter. Downloads and online sales available.

·         PatchQuest and ScanFi - Automated patch management and vulnerability assessment software for scanning, distributing and managing patches, security hotfixes and updates across heterogeneous networks comprising Windows, Red Hat and Debian Linux systems.

·         PivX Solutions Inc - Offer vulnerability and malware scanning software products for home and enterprise users.

·         Portswigger.net - Web application security testing software. Product details, downloads, how to order and screenshots.

·         Powerfuzzer - A highly automated web fuzzer. It is capable of spidering website and identifying inputs.

·         Proactive Windows Security Explorer - A password security test tool that's designed to identify and close security holes by executing an audit of account passwords, and exposing insecure account passwords.

·         Rapid7 - A vulnerability assessment and compliance solution that scans applications, databases, networks, and operating systems.

·         Retina Network Security Scanner - Identifies security vulnerabilities, suggests appropriate corrective actions and fixes. Free MyDoom, Nimda, DCOM, Sapphire SQL Worm, and Nimda scanner downloads.

·         SQL Server 2000 Security Tools - Microsoft tool scans for instances of MS SQL Server 2000 vulnerable to the "Slammer" worm, and then apply updates to the affected files. Includes SQL Scan, SQL Check,and SQL Critical Update.

·         Saint Corporation - Network vulnerability assessment scanner.

·         Securescout perimeter penetration testing - Tests are performed over the Web to Internet-connected systems.

·         SecurityMetrics Appliance - Network Scanner - Vulnerability Assessment, Intrusion Detection and Prevention.

·         Shadow Security Scanner - Offers vulnerability auditing modules for many systems and services. These include: NetBIOS, HTTP, CGI and WinCGI, FTP, DNS, DoS vulnerabilities, POP3, SMTP, LDAP, TCP/IP, UDP, Registry, Services, Users and Accounts, password vulnerabilities, publishing extensions, MSSQL, IBM BD2, Oracle, MySQL, PostgressSQL, Interbase, and MiniSQL.

·         SourceForge.net: Gamja : Web vulnerability scanner - Scans for XSS(Cross site scripting) and SQL Injection.

·         Spectator scanning tool - Scans Windows NT/2000/XP/2003 machines for P2P applications, remote-control applications, service packs, etc.

·         SuperScan, SQLScan, BOping - Several security scanners, including a portscanner, a scanner for the Back Orifice, a scanner for Microsoft SQL Server "Slammer" Worm.

·         TrustSight Security Scanner - Cross-Site Scripting, SQL Attacks,OS Attacks, Directory Traversal, cookie manipulation are tested. Claims not only to be able to find not only known vulnerabilities, but also potential new ones. CVE Compatible.

·         Visionael Security Audit - Software providing device discovery, scanning, prioritization, and report generation of vulnerabilities.

·         Vulnerability Scanning Cluster Project - A web-based interface for the Nessus vulnerability scanner and a backend queue manager for scan requests. Allows users to hierarchically manage networks of hosts, scanning policies, and automated scans.

·         Wapiti - Web application security auditor - Wapiti acts like a fuzzer, injecting payloads to see if a script is vulnerable.

·         Watchfire - AppScan - A web application vulnerability assessment product.

·         Web Security - Jamesmaurer.com - Offers online security testing and provides a list of privacy tools to help make internet travels safer.

·         WebCruiser - Security Scanner - Vulnerability Scanner and a series of security tools.

·         WhatsMyIP.org - Scans your ports and tells you which are open, closed, blocked etc.

·         Wikto Web Assessment Tool - Web server fingerprinting, directory and link extraction, Nikto and Google Hack DB scans.

·         httprecon project - Web server fingerprinting and enumeration.

·         load balancer detector - Halberd discovers HTTP load balancers. May be useful for testing load balancer configurations and for web application auditing purposes.

·         nCircle IP360 Vulnerability Management - An appliance-based solution that proactively discovers and assesses network vulnerabilities and exposures to protect networks and IP-enabled devices.

·         sqlmap: a blind SQL injection tool - SQL scanner capable of enumerating entire remote databases, and perform an active database fingerprinting.

·         wmap - A web scanner which checks for files and CGIs in non-standard directories.

·         Product Review: Acunetix Web Vulnerability Scanner - A review of the Acunetix web vulnerability scanner. (August 11, 2005)

·         Vulnerability Scanners - Review of several vulnerability scanners.

·         Network Security: Know Your Weaknesses - Review of six vulnerability scanners.

·         Vulnerability Scanner Review - Network Computing's review of several commercial and open-source Vulnerability Assessment Scanners. (January 08, 2001)

 b. Alat yang mungkin ada untuk komputer non-Windows? Cari di Internet untuk alat lain yang mungkin ada dan daftar beberapa di sini.

Jawabannya diatas
c. Langkah-langkah lain yang bisa Anda ambil untuk membantu mengamankan komputer terhadap serangan internet?
1. Mengupdate anti virus

2. mengaktifkan tools untuk proteksi atau scan (tune-up)

3. pakai antivirus local juga

4. pakai anti virus internasional yang khusus untuk keamanan dalam berinternet.