The Point-to-Point Tunneling Protocol (PPTP) [HP+97] is a protocol that allows Point-to-Point Protocol (PPP) connections [Sim94] to be tunneled through an IP network, creating a Virtual Private Network (VPN). Microsoft has implemented its own algorithms and protocols to support PPTP. This implementation of PPTP, called Microsoft PPTP, is used extensively in commercial VPN products precisely because it is already a part of the Microsoft Windows 95, 98, and NT operating systems.
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Iptablesrocks was created to provide a publicly available, easy to understand guide and tutorial for the installation and configuration of iptables. Iptables is a linux package for managing IPv4 (and optionally IPv6) packet filtering and NAT (Network Address Translation). Iptables can be configured to function as a firewall, a NAT mechanism, a packet filter or all 3 at once. The diversity of capabilities possible with iptables makes it a secure, stable and economical alterative to hardware based firewalls and routers or costly 3rd party firewall software. Iptables can also serve as a rendundant firewall in conjunction with a hardware firewall, providing you with an extra layer of security. Iptablesrocks.org covers the installation of iptables in a Redhat environment, the syntax and structure associated with iptables and a collection a pre-configured iptables configurations for a variety of applications. This site is currently under development. Enjoy!

When running a typical web server, you need a firewall that is secure and offers protection, but you also need one that allows all needed traffic to be able to enter and leave the server so that your server’s day to day operations can carry on unimpeded. This particular iptables configuration does the following:
1. Uses the “mangle” portion of the table to effectively block and/or confuse most port scans. These rules deal address FIN,SYN,RST,PSH,ACK,URG FIN,PSH and URG methods.
2. Establishes a locked down and secure foundation by initially blocking all incoming, outgoing and forwarded packets COMPLETELY.
3. With all incoming packets dropped by default, it then grants incoming access to a select number of ports. These ports are ports that a typical web server might allow. Open inbound ports include: 20 & 21 (ftp), 22 (ssh), 25 (smtp), 53 (dns), 80 (http), 110 (pop), 143 (imap), 443 (https), 993 (imaps)
4. With all outbound packets dropped by default, it then grants outbound access to a select number of ports. These ports are posts that a typical web server might allow. Open outbound ports include: 20 & 21 (ftp), 22 (ssh), 25 (smtp), 43 (whois), 53 (dns), 80 (http), 110 (pop), 143 (imap), 443 (https), 993 (imaps)
5. Both inbound and outbound connections are required to be in a “related and established” state. The “related and established” state requirement will require you to add the “ip_conntrack_ftp” module into your server’s configuration. This is typically done with the following command: insmod ip_conntrack_ftp
6. ICMP packet types 3, 8 and 11 are dropped by default for all inbound traffic. This makes your server unpingable and reduces the chance of ping ICMP based attacks. Pings are allowed for all outbound traffic.
7. Unauthorized inbound and outbound traffic is logged.

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NetSniff is a multi-network-layered real-time traffic capture and analysis tool developed as part of the ICE 3 project being run out of the Center for Advanced Internet Architectures (CAIA). NetSniff uses the PCAP library [11] to capture network traffic on a network interface or from a tcpdump [11] formatted file and parses the captured traffic at multiple network layers to produce a detailed set of statistics. Logfileparser is a complementary tool creating a database and filling it with the data captured by NetSniff. This database file can then be queried to obtain relevant statistics and generate graphical results using the R [7] software.
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IFAXVIEW is a TIFF Viewer that allows you to view Internet FAX received on the PC as a Tagged Image File Format (”TIFF”) attachment to an email. The Internet FAX is a facsimile equipment connected to an Ethernet LAN (Local Area Network) that allows you to send documents over the Internet to a remote Internet FAX or a PC terminal. It also allows you to receive and print an email transmitted by a remote PC. The Internet FAX uses the Simple Mail Transfer Protocol (”SMTP”) for communication, which is the same internet protocol used for Electronic Mail (”email”).
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TiffMaker is a print driver that converts files into Tagged Image File Format (TIFF) from your software application. For example, if you send a TIFF file converted by TiffMaker to the Muratec Internet Fax via e-mail, you can use the Muratec Internet Fax machine as a PC printer. Also, by using the e-mail forwarding feature on the Muratec Internet Fax machine, you can send your electronic document to a remote fax machine without printing. For more information, please see “Important features using your TiffMaker and e-mail software,” located on page 10 of this manual.
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Using Facsimile Program Dialing for Transmission (Facsimile Program Dialing) Sending a Document to Multiple Destinations (Broadcast Transmission) Registering the Destination to One-Touch Key (One-Touch Dialing Registration) Registering the Index for One-Touch Key (Index Registration) Registering Communication Conditions to Facsimile Program Keys (Facsimile Program Registration) Sending Fine Print and Photos (Image Quality) Adjusting Contrast for Transmission (Contrast) Selecting the Area of the Document to be Scanned and Transmitted (Scan Area) Combining One-Touch Key and Dialed Input for Transmission (Chain Dialing) Inserting Text into Transmit Documents (E-mail Header Text)
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Sending a Document (Internet Fax (IP)) Registering the Destination to One-Touch Key (One-Touch Dialing Registration) Receiving a Document Internet Fax (E-mail) Internet Fax (IP) TX to E-mail /Scan to E-mail Scan to File (One-Touch key) Scan to File (Preset Scan) Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Windows® XP is an abbreviation of the Microsoft® Windows® XP operating system. Windows® Me is an abbreviation of the Microsoft® Windows® Millennium Edition operating system. Windows® 98 is an abbreviation of the Microsoft® Windows® 98 operating system. Windows® 95 is an abbreviation of the Microsoft® Windows® 95 operating system.
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User Function 80 Auto Tray Switch User Function 81 Paper Size Check User Function 82 LAN Print T.O. User Function 83 POP Interval User Function 84 Delete POP Message User Function 85 Time Between GMT User Function 86 Text Print User Function 87 Header Print User Function 88 Coding Mode User Function 89 Extra Fine Mode User Function 90 IFAX Sender ID User Function 91 Domain Name User Function 92 Message Disposition Notification User Function
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