Re: IP
> From: "Marc Mongeon" <Mongeon@bankoe.com>
> To: <debian-user@lists.debian.org>
> Subject: Re: IP
>
> It looks like some gateway between you and the host you're trying to telnet to is acting as a firewall and blocking the telnet port (23). I believe the
> "no route to host" error is consistent with that situation. It might also
> be possible that you're not running telnetd on that host, or that you've disabled access through /etc/hosts.deny or through firewalling rules on the
> host itself. Some things to try:
>
> 1. Verify that the telnet daemon is enabled. In /etc/inetd.conf, this
> line should not be commented out:
>
> telnet stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.telnetd
>
> 2. At least temporarily, set /etc/hosts.allow like this to allow access
> from any machine:
>
> ALL: ALL
>
> 3. Check your firewalling rules:
>
> $ ipfwadm -Il
> $ ipfwadm -Ol
>
> Look for "deny" rules on the telnet port.
>
> Post your results to the list. Good luck.
>
> Marc
>
> >>> luis <luis@aztlan.fb10.tu-berlin.de> 12/21 2:11 AM >>>
> hello
>
> when i connect using ppp and get a dynamic IP as 195.243.107.221 i can
> not make a telnet to me from another machine
>
> from another machine (cenected using eth0) i can ping to the machine
> using ppp, but when i try to make a telnet to the ppp machine i always
> get the following:
>
> trying 195.243.107.221
> telnet: unable to conect to remote host: no route to host
>
> my IP always gives me a dynamic IP as 195.243.107.xxx
>
> the gateway is: 195.243.104.1
>
> i can make outbound services: web, ftp, email (out and in), etc
>
> but i need inbound access to that machine with ppp
>
> where is the failure? in my end? with my ISP?
>
> i believe that the IP of the gateway is reserved, and that the IP
> given to me are C class, does this have some influence?
>
> is possible to make a telnet to my machine using these IPs ?
>
> thanks a lot
>
> erasmo
>
hello
here are my results:
mictlan:~# cat /etc/inetd.conf|grep telnet
telnet stream tcp nowait root /usr/sbin/tcpd
/usr/sbin/in.telnetd
mictlan:~# cat /etc/hosts.allow
sendmail: all
# /etc/hosts.allow: list of hosts that are allowed to access the
system.
# See the manual pages hosts_access(5),
hosts_options(5)
# and /usr/doc/netbase/portmapper.txt.gz
#
# Example: ALL: LOCAL @some_netgroup
# ALL: .foobar.edu EXCEPT terminalserver.foobar.edu
#
# If you're going to protect the portmapper use the name "portmap" for
the
# daemon name. Remember that you can only use the keyword "ALL" and IP
# addresses (NOT host or domain names) for the portmapper. See
portmap(8)
# and /usr/doc/netbase/portmapper.txt.gz for further information.
#
# only temporarily
ALL: ALL
mictlan:~# ipfwadm -Il
Generic IP Firewall Chains not in this kernel
mictlan:~# ipfwadm -Ol
Generic IP Firewall Chains not in this kernel
i continue without being able to make a suucessful telnet to my ppp
machine. when this machine (mictlan) is conected using eth0,
everything is ok, is just as any other server
problems arise when i use the modem to conect to the net, via ppp0. it
justs can not establish the telnet conection
here are some results of tre tries to establish a telnet with the
machine using ppp:
$ ping -R -c 1 195.243.107.53
PING 195.243.107.53 (195.243.107.53): 56 data bytes
64 bytes from 195.243.107.53: icmp_seq=0 ttl=238 time=222.5 ms
RR: aztlan.fb10.tu-berlin.de (130.149.13.129)
130.149.7.5
130.149.8.1
KR-TU-Berlin1.WiN-IP.DFN.DE (188.1.1.110)
TU-Berlin1.WiN-IP.DFN.DE (188.1.162.38)
ZR-Berlin1.WiN-IP.DFN.DE (188.1.144.105)
ZR-Frankfurt1.WiN-IP.DFN.DE (188.1.144.54)
ZR-Hamburg1.WiN-IP.DFN.DE (188.1.144.21)
ZR-Hannover1.WiN-IP.DFN.DE (188.1.180.25)
--- 195.243.107.53 ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 222.5/222.5/222.5 ms
$ telnet -d 195.243.107.53
Trying 195.243.107.53...
setsockopt (SO_DEBUG): Permission denied
telnet: Unable to connect to remote host: No route to host
problems in my end? change of ISP?
thanks a lot
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