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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7 | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7')
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/buttons.html | 109 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/content.html | 273 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/index.html | 29 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/media.html | 21 |
4 files changed, 432 insertions, 0 deletions
diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/buttons.html b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/buttons.html new file mode 100644 index 0000000..d60e4a1 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/buttons.html @@ -0,0 +1,109 @@ +<html>
+
+<head>
+
+
+
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+<meta http-equiv="Content-Language" content="en-us">
+
+
+
+<title>New Page 1</title>
+<script language="JavaScript" src="../../javascript/buttons.js"></script>
+
+
+<script language="JavaScript">
+
+<!--
+
+if (document.images) {
+ image1on = new Image();
+ image1on.src = "../../images/index_ov.gif";
+
+ image2on = new Image();
+ image2on.src = "../../images/glossary_ov.gif";
+
+ image3on = new Image();
+ image3on.src = "../../images/back_ov.gif";
+
+ image4on = new Image();
+ image4on.src = "../../images/next_ov.gif";
+
+ image5on = new Image();
+ image5on.src = "../../images/quiz_ov.gif";
+
+ image1off = new Image();
+ image1off.src = "../../images/index_up.gif";
+
+ image2off = new Image();
+ image2off.src = "../../images/glossary_up.gif";
+
+ image3off = new Image();
+ image3off.src = "../../images/back_up.gif";
+
+ image4off = new Image();
+ image4off.src = "../../images/next_up.gif";
+
+ image5off = new Image();
+ image5off.src = "../../images/quiz_up.gif";
+
+ image1hint = new Image();
+ image1hint.src = "../../images/menu_index.gif";
+
+ image2hint = new Image();
+ image2hint.src = "../../images/menu_glossary.gif";
+
+ image3hint = new Image();
+ image3hint.src = "../../images/menu_back.gif";
+
+ image4hint = new Image();
+ image4hint.src = "../../images/menu_next.gif";
+
+ image5hint = new Image();
+ image5hint.src = "../../images/menu_quiz.gif";
+
+ imageHint = new Image();
+ imageHint.src = "../../images/menu_up.gif";
+}
+
+function changeImages() {
+ if (document.images) {
+ for (var i=0; i<changeImages.arguments.length; i+=2) {
+ document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
+ }
+ }
+}
+
+// -->
+</script>
+
+
+<base target="_self">
+
+
+</head>
+
+<body bgcolor="#cccccc" topmargin="0" leftmargin="0" marginheight="0" marginwidth="0">
+
+<table border="0" cellpadding="0" cellspacing="0" height="48" width="100%" style="border-collapse: collapse" bordercolor="#111111">
+ <tr>
+ <td bgcolor="#336666" width="100%" height="48" align="right"><font color="#FFFFFF" size="2" face="Arial"><b> </b></font>
+ <img name="hint" border="0" src="../../images/menu_up.gif" width="136" height="19"></td>
+ <td bgcolor="#336666" align="left" height="48"><a onMouseOver="changeImages('image1', 'image1on'); changeImages('hint', 'image1hint');" onMouseOut="changeImages('image1', 'image1off'); changeImages('hint', 'imageHint');" href="javascript:openIndex('ch1');">
+ <img name="image1" border="0" src="../../images/index_up.gif" width="31" height="48"></a></td>
+ <td bgcolor="#336666" align="left" height="48"><a onMouseOver="changeImages('image5', 'image5on'); changeImages('hint', 'image5hint');" onMouseOut="changeImages('image5', 'image5off'); changeImages('hint', 'imageHint');" href="javascript:openQuiz('ch01');">
+ <img name="image5" border="0" src="../../images/quiz_up.gif" width="31" height="48"></a></td>
+ <td bgcolor="#336666" align="left" height="48"><a href="javascript:openGlossary();" onMouseOver="changeImages('image2', 'image2on'); changeImages('hint', 'image2hint');" onMouseOut="changeImages('image2', 'image2off'); changeImages('hint', 'imageHint');">
+ <img name="image2" border="0" src="../../images/glossary_up.gif" width="31" height="48"></a></td>
+ <td bgcolor="#336666" valign="middle" align="left" height="48">
+ <a target="main" onMouseOver="changeImages('image3', 'image3on'); changeImages('hint', 'image3hint');" onMouseOut="changeImages('image3', 'image3off'); changeImages('hint', 'imageHint');" href="../1_1_6/index.html">
+ <img name="image3" border="0" src="../../images/back_up.gif" width="30" height="48"></a></td>
+ <td bgcolor="#336666" width="100%" valign="middle" height="48">
+ <a target="main" onMouseOver="changeImages('image4', 'image4on'); changeImages('hint', 'image4hint');" onMouseOut="changeImages('image4', 'image4off'); changeImages('hint', 'imageHint');" href="../1_2_1/index.html">
+ <img name="image4" border="0" src="../../images/next_up.gif" width="30" height="48"></a></td>
+ <td height="48"><img border="0" src="../../images/menu_bar.gif" width="15" height="48"></td>
+ </tr>
+</table>
+
+</html>
\ No newline at end of file diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/content.html b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/content.html new file mode 100644 index 0000000..a779a68 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/content.html @@ -0,0 +1,273 @@ +<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+
+
+
+<title>Content</title>
+<base target="_self">
+</head>
+
+<body background="../../images/bg.gif" topmargin="0" leftmargin="0" marginheight="0" marginwidth="0" onLoad="window.focus();" link="#808080" vlink="#808080" alink="#808080">
+
+<table border="0" cellpadding="0" cellspacing="0" width="100%">
+ <tr>
+ <td bgcolor="#336666" width="18" valign="top">
+ <img border="0" src="../../images/content_lines.gif" width="16" height="25">
+ <img border="0" src="../../images/transdot.gif" width="2" height="1"></td>
+ <td bgcolor="#336666"><font face="Arial" size="2" color="#FFFFFF"><b>1.1</b></font></td>
+ <td bgcolor="#336666"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#336666" width="100%">
+ <b><font face="Arial" size="2" color="#FFFFFF">Scaling Networks with NAT
+ and PAT</font></b></td>
+ <td width="9" bgcolor="#336666"> </td>
+ </tr>
+ <tr>
+ <td bgcolor="#669999" height="25" width="18"> </td>
+ <td bgcolor="#669999" height="25"><b><font face="Arial" size="2" color="#FFFFFF">
+ 1.1.7</font></b></td>
+ <td bgcolor="#669999"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#669999" height="25" width="100%"><b>
+ <font face="Arial" size="2" color="#FFFFFF">Issues with NAT</font></b></td>
+ <td bgcolor="#669999" height="25" width="9"> </td>
+ </tr></table>
+
+<table border="0" cellpadding="0" cellspacing="0" width="95%" bordercolor="#111111">
+ <tr>
+ <td width="15"></td>
+ <td>
+
+ <font FACE="Arial" SIZE="2">
+ NAT has several advantages, including:
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"></font><ul>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ NAT conserves the legally registered addressing scheme by allowing
+ the privatization of intranets. </font></li>
+ <li>
+
+ <font face="Arial" size="2">Increases the flexibility of connections
+ to the public network. Multiple pools, backup pools, and load
+ balancing pools can be implemented to assure reliable public network
+ connections. </font>
+ </li>
+ <li>
+
+ <font face="Arial" size="2">Consistency of the internal network
+ addressing scheme. On a network without private IP addresses and NAT,
+ changing public IP addresses requires the renumbering of all hosts on
+ the existing network. The costs of renumbering hosts can be
+ significant. NAT allows the existing scheme to remain while supporting
+ a new public addressing scheme. </font></li>
+ </ul>
+ <p>
+
+ <font FACE="Arial" SIZE="2">
+ NAT is not without drawbacks. Enabling address translation will cause
+ a loss of functionality, particularly with any protocol or application
+ that involves sending IP address information inside the IP payload.
+ This requires additional support by the NAT device.</font></p>
+ <p>
+
+ <font face="Arial" size="2">NAT increases delay. Switching path delays
+ are introduced because of the translation of each IP address within
+ the packet headers.</font></p>
+ <p>
+
+ <font face="Arial" size="2">Performance may be a consideration because
+ NAT is currently accomplished by using process switching. The CPU must
+ look at every packet to decide whether it has to translate it. The CPU
+ must alter the IP header, and possibly alter the TCP header.</font></p>
+ <p>
+
+ <font FACE="Arial" SIZE="2">
+ One significant disadvantage when implementing and using NAT is the
+ loss of end-to-end IP traceability. It becomes much more difficult to
+ trace packets that undergo numerous packet address changes over
+ multiple NAT hops. Hackers who want to determine the source of a
+ packet will find it difficult to trace or obtain the original source
+ or destination address. </font></p>
+ <p>
+
+ <font FACE="Arial" SIZE="2">
+ NAT also forces some applications that use IP addressing to stop
+ functioning because it hides end-to-end IP addresses. Applications
+ that use physical addresses instead of a qualified domain name will
+ not reach destinations that are translated across the NAT router.
+ Sometimes, this problem can be avoided by implementing static NAT
+ mappings. </font></p>
+ <p>
+
+ <font face="Arial" size="2">Cisco IOS NAT supports the following
+ traffic types:
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12"></font></p>
+ <ul>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ ICMP </font></li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ File Transfer Protocol (FTP), including PORT and PASV commands </font>
+ </li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ NetBIOS over TCP/IP, datagram, name, and session services </font>
+ </li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ RealNetworks' RealAudio </font></li>
+ <li>
+
+ <font face="Arial" size="2">White Pines' CUSeeMe </font></li>
+ <li>
+
+ <font face="Arial" size="2">Xing Technologies' StreamWorks </font></li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ DNS "A" and "PTR" queries </font></li>
+ <li>
+
+ <font face="Arial" size="2">H.323/Microsoft NetMeeting, IOS versions
+ 12.0(1)/12.0(1)T and later </font></li>
+ <li>
+
+ <font face="Arial" size="2">VDOnet's VDOLive, IOS versions
+ 11.3(4)11.3(4)T and later </font></li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ VXtreme's Web Theater, IOS versions 11.3(4)11.3(4)T and later </font></li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ IP Multicast, IOS version 12.0(1)T with source address translation
+ only </font>
+ </li>
+ </ul>
+ <p>
+
+ <font FACE="Arial" SIZE="2">
+ Cisco IOS NAT does not support the following traffic types:</font></p>
+ <ul>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ Routing table updates </font></li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ DNS zone transfers </font></li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ BOOTP </font></li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ talk and ntalk protocols </font></li>
+ <li>
+
+ <font FACE="Arial" SIZE="2">
+ Simple Network Management Protocol (SNMP)</font></li>
+ </ul>
+ <p>
+ <TABLE bgcolor="#B0AFAF" width="95%" border="0" cellspacing="0" cellpadding="0">
+ <TR>
+ <TD valign="top">
+ <TABLE bgcolor="#669999" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD width="5">
+ <img border="0" src="../../images/lab_toplft.gif" width="116" height="23"></TD>
+ <TD><IMG alt="" height="1" width="3" src="../../images/s.gif"></TD><TD align="right" valign="top">
+ <IMG alt="" src="../../images/corner_ur_7.gif" width="7" height="7"></TD>
+ </TR>
+ </TABLE>
+
+ <TABLE bgcolor="#B0AFAF" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD>
+ <TABLE width="100%" cellpadding="2" cellspacing="0" border="0" bordercolor="#111111">
+ <TR>
+ <TD bgcolor="#ffffff" width="15"> </TD>
+ <TD bgcolor="#ffffff"><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><font color="#808080">
+ <a href="javascript:void(0)" onClick="window.open('../../activities/ch01/activity_1_1_7.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');">
+ <img border="0" src="../../images/media_icon.gif" width="25" height="25"></a> <b>
+ <a onClick="window.open('../../activities/ch01/activity_1_1_7.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');" href="javascript:void(0)">Interactive Media Activity</a></b></font></p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#808080">
+ <p>Checkbox: Issues with NAT</p>
+ <p>When the student has completed this activity, the student
+ will be able to identify issues with the use of NAT.</p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><IMG alt="" height="2" width="1" src="../../images/s.gif"></p></TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+
+
+
+
+ <TABLE bgcolor="#B0AFAF" width="95%" border="0" cellspacing="0" cellpadding="0">
+ <TR>
+ <TD valign="top">
+ <TABLE bgcolor="#669999" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD width="5">
+ <img border="0" src="../../images/lab_toplft.gif" width="116" height="23"></TD>
+ <TD><IMG alt="" height="1" width="3" src="../../images/s.gif"></TD><TD align="right" valign="top">
+ <IMG alt="" src="../../images/corner_ur_7.gif" width="7" height="7"></TD>
+ </TR>
+ </TABLE>
+
+ <TABLE bgcolor="#B0AFAF" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD>
+ <TABLE width="100%" cellpadding="2" cellspacing="0" border="0" bordercolor="#111111">
+ <TR>
+ <TD bgcolor="#ffffff" width="15"> </TD>
+ <TD bgcolor="#ffffff"><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><font color="#808080">
+ <img border="0" src="../../images/links_icon.gif" width="25" height="25">
+ <b>Web Links</b></font></p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#808080">
+
+ <p>Verifying NAT Operation and Basic NAT Troubleshooting<p>
+ <a target="_blank" href="http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094c32.shtml">
+ http://www.cisco.com/en/US/tech/</a><br>
+ <a target="_blank" href="http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094c32.shtml">
+ tk648/tk361/technologies_tech_note</a><br>
+ <a target="_blank" href="http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094c32.shtml">
+ 09186a0080094c32.shtml</a></font></p>
+
+ <p>
+ <IMG alt="" height="2" width="1" src="../../images/s.gif"></p>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE><p>
+
+ </td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
\ No newline at end of file diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/index.html b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/index.html new file mode 100644 index 0000000..82a25be --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/index.html @@ -0,0 +1,29 @@ +<html>
+
+<head>
+
+<title>Cisco Global Learning Network</title>
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+
+</head>
+
+<frameset cols="490,301" framespacing="0" border="0" frameborder="0" marginheight=0 marginwidth=0 topmargin=0 leftmargin=0>
+ <frameset rows="100%,48">
+ <frame name="graphics" scrolling="no" marginwidth="0" marginheight="0" src="media.html">
+ <frame name="bottom" scrolling="no" marginwidth="0" marginheight="0" src="../../navigation.html" target="contents">
+ </frameset>
+ <frameset rows="100%,48">
+ <frame name="content" scrolling="yes" marginwidth="0" marginheight="0" target="_self" src="content.html">
+ <frame name="navigation" scrolling="no" marginwidth="0" marginheight="0" noresize src="buttons.html" target="self">
+ </frameset>
+
+ <noframes>
+ <body>
+
+ <p>This page uses frames, but your browser doesn't support them.</p>
+
+ </body>
+ </noframes>
+</frameset>
+
+</html>
diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/media.html b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/media.html new file mode 100644 index 0000000..ea73603 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_1_7/media.html @@ -0,0 +1,21 @@ +<html>
+
+<head>
+
+
+
+<title>Flash Graphic</title>
+</head>
+
+<body bgcolor="#FFFFFF" topmargin="1" leftmargin="1">
+<OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
+ codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"
+ WIDTH="100%" HEIGHT="100%">
+ <PARAM NAME=movie VALUE="../../flash/ch01/1_1_7.swf"> <PARAM NAME=quality VALUE=high> <PARAM NAME=bgcolor VALUE=#FFFFFF>
+ <EMBED src="../../flash/ch01/1_1_7.swf" quality=high bgcolor=#FFFFFF WIDTH="100%" HEIGHT="100%" TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer"></EMBED></OBJECT>
+
+
+
+</body>
+
+</html>
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