Date: Sat, 25 Aug 2001 21:34:42 -0700 From: Harry Putnam <reader@newsguy.com> To: freebsd-mobile@FreeBSD.ORG Subject: Frustrating network problem - need diagnotic help Message-ID: <m1snefa17h.fsf@reader.newsguy.com>
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Setup: Toshiba 4005CDS
FreeBSD-4.3-20010807-STABLE
In my own defense concerning posting this here:
I've posted this problem on `questions' `stable' and `net'.
To date I have received no help whatever. Maybe since it is a laptop,
someone here will take time to help.
Summary of network setup:
Local lan of 5 machines behind a hardware (NETGEAR FR314)
Router/firewall.
Machine 1 = Linux (Redhat 7.1)
Machine 2 = Solaris 8 (intel)
Machine 3 = win2k
Machine 4 = Freebsd-4.3(snap) Toshiba laptop
Machine 5 = win98
All machines on lan can communicate except the laptop.
However, the laptop can connect to any lan or internet address with no
problems. Seemingly this indicates the FreeBSD-4.3 machine has the
ethernet interface and gateway setup well enough for outgoing
connections and replies.
The trouble comes when trying to connect to the FreeBSD machine from
the lan. I can't ping, telnet, ftp, ssh to it. Telnet and ftp are
temporarily enabled in /etc/inetd.conf.
The Freebsd machine can ssh to other machines on the lan. None can
ssh to it. sshd is running on the laptop.
Possible pertinent kernel parameters compiled in:
========================================
options IPFIREWALL #firewall
options IPFIREWALL_VERBOSE #print information about
# dropped packets
options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by
options IPDIVERT #divert sockets
options TCPDEBUG
Possible pertinent parts of /etc/rc.conf
========================================
firewall_enable="YES" # Set to YES to enable firewall functionality
firewall_script="/etc/rc.firewall" # Which script to run to set up the firewall
firewall_type="OPEN" # Firewall type (see /etc/rc.firewall)
sshd_enable="YES" # Enable sshd
sshd_program="/usr/local/sbin/sshd" # path to sshd
sendmail_enable="NO"
========================================
cat /etc/rc.firewall
65535 allow ip from any to any
ipfw list
65535 allow ip from any to any
Renaming /etc/rc.firewall doesn't help either.
Should the above lines mean all connections are allowed?
If so, what the heck is blocking incoming connectons?
I see nothing in dmesg or syslog output, that I recognize as pointing
to a problem.
One possible line is:
IP packet filtering initialized, divert enabled, rule-based
forwarding disabled. default to accept, unlimited logging
What have I neglected to look at. Maybe netstat -nr, but it looks ok
to my untrained eye.
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.0.1 UGSc 0 0 ed0
127.0.0.1 127.0.0.1 UH 0 0 lo0
192.168 link#3 UC 1 0 ed0 =>
192.168.0.1 link#3 UHLW 1 0 ed0 =>
However ed0 ip address does not appear there. (192.168.0.4)
What other diagnostic things can I do?
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