<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML ><HEAD ><TITLE >( Netstat ) - I'm trying to use the NETSTAT command to show my Masqueraded connections but its not working</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Linux IP Masquerade HOWTO" HREF="index.html"><LINK REL="UP" TITLE="Frequently Asked Questions" HREF="faq.html"><LINK REL="PREVIOUS" TITLE="( 1:1 NAT ) - I'd like to do 1:1 NAT but I can't figure out how to do it" HREF="one-to-one-nat.html"><LINK REL="NEXT" TITLE="( VPNs ) - I would like to get Microsoft PPTP (GRE tunnels) and/or IPSEC (Linux SWAN) tunnels running through IP MASQ " HREF="vpns.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Linux IP Masquerade HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="one-to-one-nat.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 7. Frequently Asked Questions</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="vpns.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="NETSTAT" ></A >7.34. ( Netstat ) - I'm trying to use the NETSTAT command to show my Masqueraded connections but its not working</H1 ><P >There might be a problem with the "netstat" program in 2.0.x-based Linux distros. After a Linux reboot, running "netstat -M" works fine but after a MASQed computer runs some successful ICMP traffic like ping, traceroute, etc., you might see something like:</P ><P >masq_info.c: Internal Error `ip_masquerade unknown type'.</P ><P >The workaround for this is to use the "/sbin/ipfwadm -M -l" command. You will also notice that once the listed ICMP masquerade entries timeout, "netstat" works again.</P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="one-to-one-nat.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="vpns.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >( 1:1 NAT ) - I'd like to do 1:1 NAT but I can't figure out how to do it</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="faq.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >( VPNs ) - I would like to get Microsoft PPTP (GRE tunnels) and/or IPSEC (Linux SWAN) tunnels running through IP MASQ</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
