Hi,
I'm having trouble connecting to the http based admin ports on my
LinkSys VPN router (BEFVP41) using the 2.6.0-test4 kernel on Redhat 9.
The connectivity works fine with 2.4.20-19.9 from Redhat as well as
other 2.4.x kernels. With the 2.6 kernel, I can ping the machine, but
can't connect to the http ports (80, 8080)
# uname -a
Linux chuckie 2.6.0-test4-fh1 #1 Mon Sep 1 05:43:07 CDT 2003 i686 athlon
i386 GNU/Linux
# nmap 192.168.3.1
Starting nmap 3.30 ( http://www.insecure.org/nmap/ ) at 2003-09-10 06:42 CDT
Interesting ports on 192.168.3.1:
(The 1642 ports scanned but not shown below are in state: closed)
Port State Service
80/tcp open http
8080/tcp open http-proxy
Nmap run completed -- 1 IP address (1 host up) scanned in 2.468 seconds
# ping -c 1 192.168.3.1
PING 192.168.3.1 (192.168.3.1) 56(84) bytes of data.
64 bytes from 192.168.3.1: icmp_seq=1 ttl=149 time=1.44 ms
--- 192.168.3.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 1.448/1.448/1.448/0.000 ms
# telnet 192.168.3.1 80
Trying 192.168.3.1...
telnet: connect to address 192.168.3.1: Connection refused
The VPN router is doing NAT correctly for both kernels, and connectivity
to services other than the router itself is fine.
I am not sure where to even begin debugging this problem.
Regards
-fawad
On Wednesday 10 September 2003 06:46 am, Fawad Halim wrote:
> Hi,
> I'm having trouble connecting to the http based admin ports on my
> LinkSys VPN router (BEFVP41) using the 2.6.0-test4 kernel on Redhat 9.
> The connectivity works fine with 2.4.20-19.9 from Redhat as well as
> other 2.4.x kernels. With the 2.6 kernel, I can ping the machine, but
> can't connect to the http ports (80, 8080)
>
<skip>
> # telnet 192.168.3.1 80
> Trying 192.168.3.1...
> telnet: connect to address 192.168.3.1: Connection refused
>
> The VPN router is doing NAT correctly for both kernels, and connectivity
> to services other than the router itself is fine.
>
Make sure that you not using ECN - my Linksys refuses incoming
connections with ECN. Passes them tohrough just fine, tough.
Dmitry
Dmitry, Thanks for the pointer. In 2.6, apparently ECN is enabled by
default. Disabling it did the trick.
-fawad
> On Wednesday 10 September 2003 06:46 am, Fawad Halim wrote:
>> Hi,
>> I'm having trouble connecting to the http based admin ports on my
>> LinkSys VPN router (BEFVP41) using the 2.6.0-test4 kernel on Redhat 9.
>> The connectivity works fine with 2.4.20-19.9 from Redhat as well as
>> other 2.4.x kernels. With the 2.6 kernel, I can ping the machine, but
>> can't connect to the http ports (80, 8080)
>>
> <skip>
>> # telnet 192.168.3.1 80
>> Trying 192.168.3.1...
>> telnet: connect to address 192.168.3.1: Connection refused
>>
>> The VPN router is doing NAT correctly for both kernels, and connectivity
>> to services other than the router itself is fine.
>>
>
> Make sure that you not using ECN - my Linksys refuses incoming
> connections with ECN. Passes them tohrough just fine, tough.
>
> Dmitry
>