 | | | can 't connect to LAN | can 't connect to LAN 2004-04-12 - By SaravanaKumar
Back
Shatam Bhattacharya wrote:
> the output is Settings for eth0:
> Supported ports: [ TP MII ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> Supports auto-negotiation: Yes
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> Advertised auto-negotiation: Yes
> Speed: 100Mb/s
> Duplex: Full
> Port: MII
> PHYAD: 32
> Transceiver: internal
> Auto-negotiation: on
> Supports Wake-on: pumbg
> Wake-on: d
> Current message level: 0xffffffff (-1)
> Link detected: yes
mmm OK.
> it does not ping the messege is
> icmp destination host unreachable...
And I understand all other systems are able to ping each other.
>
>
> output of iptables -L
> Chain INPUT (policy ACCEPT)
> target prot opt source destination
> RH-Lokkit-0-50-INPUT all -- anywhere anywhere
>
> Chain FORWARD (policy ACCEPT)
> target prot opt source destination
> RH-Lokkit-0-50-INPUT all -- anywhere anywhere
>
> Chain OUTPUT (policy ACCEPT)
> target prot opt source destination
>
> Chain RH-Lokkit-0-50-INPUT (2 references)
> target prot opt source destination
> ACCEPT udp -- 172.31.100.9 anywhere udp spt:domain
dpts:1025:65535
> ACCEPT udp -- 172.31.100.8 anywhere udp spt:domain
dpts:1025:65535
> ACCEPT udp -- 172.31.100.6 anywhere udp spt:domain
dpts:1025:65535
> ACCEPT tcp -- anywhere anywhere tcp dpt:smtp
flags:SYN,RST,ACK/SYN
> ACCEPT tcp -- anywhere anywhere tcp dpt:http
flags:SYN,RST,ACK/SYN
> ACCEPT tcp -- anywhere anywhere tcp dpt:ftp flags
:SYN,RST,ACK/SYN
> ACCEPT tcp -- anywhere anywhere tcp dpt:ssh flags
:SYN,RST,ACK/SYN
> ACCEPT tcp -- anywhere anywhere tcp dpt:telnet
flags:SYN,RST,ACK/SYN
> ACCEPT udp -- anywhere anywhere udp spts:bootps
:bootpc dpts:bootps:bootpc
> ACCEPT udp -- anywhere anywhere udp spts:bootps
:bootpc dpts:bootps:bootpc
> ACCEPT all -- anywhere anywhere
> ACCEPT all -- anywhere anywhere
> REJECT tcp -- anywhere anywhere tcp dpts:0:1023
flags:SYN,RST,ACK/SYN reject-with icmp-port-unreachable
> REJECT tcp -- anywhere anywhere tcp dpt:nfs flags
:SYN,RST,ACK/SYN reject-with icmp-port-unreachable
> REJECT udp -- anywhere anywhere udp dpts:0:1023
reject-with icmp-port-unreachable
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> REJECT udp -- anywhere anywhere udp dpt:nfs
reject-with icmp-port-unreachable
> REJECT tcp -- anywhere anywhere tcp dpts:x11:6009
flags:SYN,RST,ACK/SYN reject-with icmp-port-unreachable
> REJECT tcp -- anywhere anywhere tcp dpt:xfs flags
:SYN,RST,ACK/SYN reject-with icmp-port-unreachable
>
The problem is there in ur firewall config. You have selected medium
firewall for ur system. Please change it to Nofirewall and then try again.
Also if ur connecting to internet from ur Linux machine have a look at
http://tldp.org for firewall howtos. man iptables is a good place to
start building good firewall. Google for it and find more docs.
> Is there something wrong with the installation. would reinstalltion help ??
You're in Linux and for most of the problems u face u don't have to
reboot/reinstall the machine(except for some).
:-)
All the Best
SK
--
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unintentional side effect.
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SK
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