[nos-bbs] Raspberry Pi Jnos Telnet from another PC problem

[Bob Tenty]

Hi Jose,

I already suspected it was already something like that :-)

I guess it is:  ufw allow proto ipencap   or  ufw allow proto 4

by default the rules are valid for all interfaces unless you decide
otherwise.

73,

Bob VE3TOK

On 14-01-28 09:28 PM, Jose Ng Lee wrote:
> I found the solution to my problem.
>  
> I disable the firewall ufw and is forwarding the IP and be able to
> telnet from another PC.
>  
> I used ufw because is a simple firewall and have this rules:
>
> To                         Action      From
> --                         ------      ----
> 80/tcp                     ALLOW       Anywhere
> 22/tcp                     ALLOW       Anywhere
> 10000/tcp                  ALLOW       Anywhere
> 443/tcp                    ALLOW       Anywhere
> 6300/tcp                   ALLOW       Anywhere
> 7300/tcp                   ALLOW       Anywhere
> 21/tcp                     ALLOW       Anywhere
> 23/tcp                     ALLOW       Anywhere
> 3286/tcp                   ALLOW       Anywhere
> 8000/tcp                   ALLOW       Anywhere
> 10092                      ALLOW       Anywhere
> 10094                      ALLOW       Anywhere
> 10093                      ALLOW       Anywhere
> 10095                      ALLOW       Anywhere
> 14580                      ALLOW       Anywhere
> 14501                      ALLOW       Anywhere
> Now have to figure out how to write the rule for the ufw to not block
> the tun0 IP forwarding.
>  
> On my Full size PC with Ubuntu using a more complicated Shoreline
> Firewall.
>  
> 73s Jose / HP2AT
>
>     ----- Original Message -----
>     *From:* Bob Tenty <mailto:bobtenty at gmail.com>
>     *To:* nos-bbs at tapr.org <mailto:nos-bbs at tapr.org>
>     *Sent:* Monday, January 27, 2014 3:58 PM
>     *Subject:* Re: [nos-bbs] Raspberry Pi Jnos Telnet from another PC
>     problem
>
>     To narrow it down you can use "tcpdump" at the interface from the
>     kernel to jnos and the ipip interface
>     to see which one what is not passing the traffic.
>
>     73,
>
>     Bob VE3TOK
>
>
>     On 14-01-27 11:35 AM, Jose Ng Lee wrote:
>>     I am using the F6BVP Raspbian image preinstalled with AX.25 and
>>     FBB, DXSpider, and FPAC working OK.
>>      
>>     Uploaded the Jnos 2.0j and tried also 2.0jx4 sources to the Pi
>>     and compiled OK both jnos executable.
>>      
>>     My problem is that I am not able to Telnet directly to the JNOS
>>     in the Raspberry PI from a PC.
>>      
>>     I am able from the PC to Telnet first to the Linux side on the
>>     Raspberry Pi and then to the JNOS.
>>      
>>     On my Full size PC with Ubuntu and JNOS, I can Telnet OK from a
>>     PC directly to JNOS.  I copy the autoexec.nos from my PC Ubuntu
>>     JNOS to the Raspberry Pi and changed some lines with the
>>     different IPs, etc..
>>      
>>     On Jnos side, the tun0 is setup as usual:
>>     # NOS creates the TUN device, so NOS needs to do a postcofig
>>     shell ifconfig tun0 200.46.129.25 pointopoint 200.46.129.26 mtu
>>     1500 up
>>     pause 5
>>     #
>>     shell arp -s 200.46.129.26 b8:27:eb:e1:b2:ee pub
>>     #
>>      
>>     The ax25-up script already do:
>>     echo 1 > /proc/sys/net/ipv4/ip_forward
>>      
>>     Also, later checked and did "more ip_forward" and has the "1".
>>      
>>     Checked from both the PC Ubuntu Jnos and Raspberry pi Jnos, With
>>     Webmin the network interfaces, routes, hostnames.  Also, checked
>>     on the command line from both machines de ARP and it looks OK for
>>     both.
>>      
>>     Tried other things with no luck.  Looks like the RPI not able to
>>     do the IP to IP forwarding through the tun0 from an outside PC
>>     Telnet connection.
>>      
>>     Has anyone got their Raspberry Pi with Jnos setup right and be
>>     able to Telnet directly from a PC.
>>      
>>     73s Jose / HP2AT
>>
>>
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