Very Computer

I am struggling with something that must have a very simple solution.
I am using Samba on RH 7.1 with all MSWin9x clients.

Problem:

I cannot ping my linux server or any other client on my ethernet
network.

Facts:

1. Samba works just fine.
2. I can use SSH (putty) to contact the linux.
3. Ping is able to resolve host names into IP addresses. I.e. if I
ping a non-existent host, it responds that the host does not exist.
4. While logged onto the server I can ping the server itself with no
problem.
5. Ping worked just fine when I installed RH 7.1, but something
happened along the way that "broke" it. I have no idea what I did to
break it.

Possible result of the same problem :
I have VERY LONG times (1-2 minutes for a short email) when I SMTP
from Win98 client machine to the linux sendmail, but it does
eventually get through.

Any ideas? I am pretty new at this.

Keith

: Hi,
:
: I am struggling with something that must have a very simple solution.
: I am using Samba on RH 7.1 with all MSWin9x clients.
:
: Problem:
:
: I cannot ping my linux server or any other client on my ethernet
: network.
:
: Facts:
:
: 1. Samba works just fine.
: 2. I can use SSH (putty) to contact the linux.
: 3. Ping is able to resolve host names into IP addresses. I.e. if I
: ping a non-existent host, it responds that the host does not exist.
: 4. While logged onto the server I can ping the server itself with no
: problem.
: 5. Ping worked just fine when I installed RH 7.1, but something
: happened along the way that "broke" it. I have no idea what I did to
: break it.
:
: Possible result of the same problem :
: I have VERY LONG times (1-2 minutes for a short email) when I SMTP
: from Win98 client machine to the linux sendmail, but it does
: eventually get through.
:
: Any ideas? I am pretty new at this.

Sounds really strange. As you said the networking in general works,
otherwise you wouldn't be able to login using putty. But this (like samba)
is using the tcp protocol, ping or traceroute uses the icmp procotocl.
Perhaps, for some reason, you installed iptables on your RH box dropping
any icmp packets? If you are in a secure environment try to disable your
INPUT rules by

        iptables -P INPUT ACCEPT
        iptables -F INPUT
        iptables -P OUTPUT ACCEPT
        iptables -F OUTPUT
        iptables -P FORWARD ACCEPT
        iptables -F FORWARD

These commands shut down basically the firewall rules completely. Does
ping still don't work?

Regards, Joerg.

[...]

Quote:>1. Samba works just fine.
>2. I can use SSH (putty) to contact the linux.
>3. Ping is able to resolve host names into IP addresses. I.e. if I
>ping a non-existent host, it responds that the host does not exist.
>4. While logged onto the server I can ping the server itself with no
>problem.
>5. Ping worked just fine when I installed RH 7.1, but something
>happened along the way that "broke" it. I have no idea what I did to
>break it.

Quote:>Possible result of the same problem :
>I have VERY LONG times (1-2 minutes for a short email) when I SMTP
>from Win98 client machine to the linux sendmail, but it does
>eventually get through.

Michael
--

          Lumber Cartel Unit #456 (TINLC) & Official Netscum
    Note: If you want me to send you email, don't munge your address.

When I attempt any of the iptables commands, I get an error
...iptables.o device or resource busy
etc.

Is it possible that I need to completely disable the iptables daemon?
We are running an internal network, only with dialup connection to the
internet. We do not need a high security environment at this time.

Keith

: > Sounds really strange. As you said the networking in general works,
: > otherwise you wouldn't be able to login using putty. But this (like samba)
: > is using the tcp protocol, ping or traceroute uses the icmp procotocl.
: > Perhaps, for some reason, you installed iptables on your RH box dropping
: > any icmp packets? If you are in a secure environment try to disable your
: > INPUT rules by
: >
: >  iptables -P INPUT ACCEPT
: >  iptables -F INPUT
: >  iptables -P OUTPUT ACCEPT
: >  iptables -F OUTPUT
: >  iptables -P FORWARD ACCEPT
: >  iptables -F FORWARD
: >
: > These commands shut down basically the firewall rules completely. Does
: > ping still don't work?
: >
: > Regards, Joerg.
:
: Joerg,
:
: When I attempt any of the iptables commands, I get an error
: ...iptables.o device or resource busy
: etc.
:
: Is it possible that I need to completely disable the iptables daemon?
: We are running an internal network, only with dialup connection to the
: internet. We do not need a high security environment at this time.
There is no daemon or something like this. The only way to completely
disable it is either setting up the commands above or to disable it during
kernel compilation.

Concerning your error message I found another news, please look
at this side, this might help you stopping your firewall rulez:

http://lists.samba.org/pipermail/netfilter/2001-July/013080.html

Regards, Joerg.