225 lines
3.8 KiB
HTML
225 lines
3.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>( Timeouts ) - Connections seem to break if I don't use them often.
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Why is that?</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="Linux IP Masquerade HOWTO"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Frequently Asked Questions"
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HREF="faq.html"><LINK
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REL="PREVIOUS"
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TITLE="( Distro Setup ) - How can I get IP Masquerade running on Redhat,
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Debian, Slackware, etc.?"
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HREF="distro-specific.html"><LINK
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REL="NEXT"
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TITLE="( Odd Behavior ) - When my Internet connection first comes up, nothing
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works. If I try again, everything then works fine. Why is this?"
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HREF="masq-behavior.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>Linux IP Masquerade HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="distro-specific.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 7. Frequently Asked Questions</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="masq-behavior.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="MASQ-TIMEOUTS"
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></A
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>7.13. ( Timeouts ) - Connections seem to break if I don't use them often.
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Why is that?</H1
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><P
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>IP Masq, by default, sets its timers for TCP session, TCP FIN, and UDP traffic
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to 15 minutes. It is recommend to use the following settings (as already shown
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in this HOWTO's /etc/rc.d/rc.firewall-* ruleset) for most users:</P
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><P
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>Linux 2.4.x with IPTABLES</P
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><P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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>IPMASQ timeouts are NOT adjustable under IPTABLES</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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>Linux 2.2.x with IPCHAINS:</P
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><P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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># MASQ timeouts
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#
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# 2 hrs timeout for TCP session timeouts
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# 10 sec timeout for traffic after the TCP/IP "FIN" packet is received
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# 60 sec timeout for UDP traffic (MASQ'ed ICQ users must enable a 30sec
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# firewall timeout in ICQ itself)
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#
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/ipchains -M -S 7200 10 60</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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>Linux 2.0.x with IPFWADM:</P
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><P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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># MASQ timeouts
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#
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# 2 hrs timeout for TCP session timeouts
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# 10 sec timeout for traffic after the TCP/IP "FIN" packet is received
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# 60 sec timeout for UDP traffic (MASQ'ed ICQ users must enable a 30sec
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# firewall timeout in ICQ itself)
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#
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/sbin/ipfwadm -M -s 7200 10 60</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="distro-specific.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="masq-behavior.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
|
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ALIGN="left"
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VALIGN="top"
|
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>( Distro Setup ) - How can I get IP Masquerade running on Redhat,
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|
Debian, Slackware, etc.?</TD
|
|
><TD
|
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WIDTH="34%"
|
|
ALIGN="center"
|
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VALIGN="top"
|
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><A
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HREF="faq.html"
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ACCESSKEY="U"
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>Up</A
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></TD
|
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><TD
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WIDTH="33%"
|
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ALIGN="right"
|
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VALIGN="top"
|
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>( Odd Behavior ) - When my Internet connection first comes up, nothing
|
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works. If I try again, everything then works fine. Why is this?</TD
|
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></TR
|
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></TABLE
|
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></DIV
|
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></BODY
|
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></HTML
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> |