[nos-bbs] Suse 9.1, jnos 2.0e

Tim Gorman ab0wr at ab0wr.net
Wed Jun 21 13:00:12 EDT 2006


Ok all,

I'm having more problems with my Suse 9.1 jnos implementation. I'm pretty sure 
my stack overflow problem is a problem with my tnc. I'm waiting to get 
another tnc andradio combination that I can get to work to see if I can 
confirm this.

I began to test being able to telnet into the jnos system from outside and 
find some troubling indications.

I cannot ping across the tun0 interface in either direction, it looks like I 
get no reponse. I cannot telnet across the tun0 interface in either 
direction, I get no response. Yet all the routing and everything looks just 
like it does on my other Suse 8.2 system that is working. The screwy thing is 
that when I ping into the system, ifconfig shows the RX and TX packet and 
byte counts incrementing but nothing seems to happen. 

my systems look like this

timsatern (192.168.10.39)  <==>  saternjnos (192.168.10.38)

bagend (192.168.10.12)   <==>   jnos (192.168.10.33)



Here are some dumps from the various systems. I honestly can't see anyting 
wrong and I'm stumped. Is this a jnos thing or a Suse thing? If you look 
carefully at the the jnos 'tcp status' dumps on the Suse 9.1 system, the 
tcpRetransSegs and tcpOutRsts values would seem to indicate a problem but I 
just don't know enough to evaluate what that might be!

Any suggestions anyone? 

tim ab0wr


**********************************************************

               Suse 8.2


---------------------------------------------------------
jnos> ifconfig
pk0      IP addr ab0wr.ampr.org MTU 256 Link encap AX25
         Link addr AB0WR-8   BBS AB0WR-7   Paclen 256   Irtt 5000
         BCText: internet gateway / emergency communications
         flags 0xfb0 trace 0x0 netmask 0x00000000 broadcast 0.0.0.0
         sent: ip 0 tot 9 idle 0:00:03:22
         recv: ip 0 tot 79 idle 0:00:02:33
         descr: packet port on 145.03 Mhz
tun0     IP addr jnos.ab0wr.net MTU 1500 Link encap TUN
         flags 0x0 trace 0x0 netmask 0x00000255 broadcast 0.0.0.0
         sent: ip 44 tot 44 idle 0:00:16:02
         recv: ip 59 tot 59 idle 0:00:16:02
loopback IP addr localhost MTU 65535 Link encap None
         flags 0x0 trace 0x0 netmask 0xffffffff broadcast 255.255.255.255
         sent: ip 0 tot 0 idle 0:01:23:29
         recv: ip 0 tot 0 idle 0:01:23:29
encap    IP addr ab0wr.ampr.org MTU 1500 Link encap None
         flags 0x0 trace 0x0 netmask 0xffffffff broadcast 255.255.255.255
         sent: ip 0 tot 0 idle 0:01:23:29
         recv: ip 0 tot 0 idle 0:01:23:29
jnos> 

---------------------------------------------------------------
bagend:~ # ifconfig
eth0      Link encap:Ethernet  HWaddr 00:E0:7D:95:C4:6B
          inet addr:192.168.10.12  Bcast:192.168.10.255  Mask:255.255.255.0
          inet6 addr: fe80::2e0:7dff:fe95:c46b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:694796 errors:4 dropped:4 overruns:4 frame:0
          TX packets:794376 errors:0 dropped:0 overruns:7 carrier:0
          collisions:133334 txqueuelen:1000
          RX bytes:370157498 (353.0 Mb)  TX bytes:437718247 (417.4 Mb)
          Interrupt:11 Base address:0xa000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:3068 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3068 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:359383 (350.9 Kb)  TX bytes:359383 (350.9 Kb)

tun0      Link encap:Point-to-Point Protocol
          inet addr:192.168.10.12  P-t-P:192.168.10.33  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:45 errors:0 dropped:0 overruns:0 frame:0
          TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10
          RX bytes:2711 (2.6 Kb)  TX bytes:3341 (3.2 Kb)

bagend:~ #              
                  

-----------------------------------------------------------

jnos> route
Destination      Len Interface Gateway          Metric P Timer  Use
44.0.0.0         8   pk0                        1        man    0
tg6124.ab0wr.net 32  tun0                       1        man    5
default          0   tun0                       1        man    40
jnos>  

-----------------------------------------------------------
bagend:~ # route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
jnos.ab0wr.net  *               255.255.255.255 UH    0      0        0 tun0
192.168.10.0    *               255.255.255.0   U     0      0        0 eth0
link-local      *               255.255.0.0     U     0      0        0 eth0
loopback        *               255.0.0.0       U     0      0        0 lo
default         tg6124.ab0wr.ne 0.0.0.0         UG    0      0        0 eth0
bagend:~ # 

---------------------------------------------------------



jnos> ip status
( 1)ipForwarding                 1     ( 2)ipDefaultTTL               255
( 3)ipInReceives                60     ( 4)ipInHdrErrors                0
( 5)ipInAddrErrors               0     ( 6)ipForwDatagrams              0
( 7)ipInUnknownProtos            0     ( 8)ipInDiscards                 0
( 9)ipInDelivers                60     (10)ipOutRequests               45
(11)ipOutDiscards                0     (12)ipOutNoRoutes                0
(13)ipReasmTimeout              30     (14)ipReasmReqds                 0
(15)ipReasmOKs                   0     (16)ipReasmFails                 0
(17)ipFragOKs                    0     (18)ipFragFails                  0
(19)ipFragCreates                0
jnos>

---------------------------------------------------------

jnos> tcp status
( 1)tcpRtoAlgorithm              4     ( 2)tcpRtoMin                    0
( 3)tcpRtoMax           4294967295     ( 4)tcpMaxConn          4294967295
( 5)tcpActiveOpens               0     ( 6)tcpPassiveOpens              3
( 7)tcpAttemptFails              0     ( 8)tcpEstabResets               0
( 9)tcpCurrEstab                 0     (10)tcpInSegs                   52
(11)tcpOutSegs                  37     (12)tcpRetransSegs               0
(14)tcpInErrs                    0     (15)tcpOutRsts                   0
&TCB     Rcv-Q Snd-Q  Local socket           Remote socket          State
jnos>  

***********************************************************************

                      Suse 9.1

------------------------------------------------------------
jnos> ifconfig
pk0      IP addr 0.0.0.0 MTU 256 Link encap AX25
         Link addr AB0WR-5   BBS AB0WR-6   Paclen 256   Irtt 5000
         BCText: internet gateway / emergency communications
         flags 0xfb0 trace 0x0 netmask 0x00000000 broadcast 0.0.0.0
         sent: ip 0 tot 10 idle 0:00:09:54
         recv: ip 0 tot 0 idle 0:01:50:03
         descr: packet port on 145.03 Mhz
tun0     IP addr saternjnos.ab0wr.net MTU 1500 Link encap TUN
         flags 0x0 trace 0x0 netmask 0x00000255 broadcast 0.0.0.0
         sent: ip 40 tot 40 idle 0:00:04:08
         recv: ip 20 tot 20 idle 0:00:04:08
loopback IP addr 127.0.0.1 MTU 65535 Link encap None
         flags 0x0 trace 0x0 netmask 0xffffffff broadcast 255.255.255.255
         sent: ip 0 tot 0 idle 0:01:51:09
         recv: ip 0 tot 0 idle 0:01:51:09
encap    IP addr 0.0.0.0 MTU 65535 Link encap None
         flags 0x0 trace 0x0 netmask 0xffffffff broadcast 255.255.255.255
         sent: ip 0 tot 0 idle 0:01:51:39
         recv: ip 0 tot 0 idle 0:01:51:39
jnos>

--------------------------------------------------------------------

timsatern:~ # ifconfig
eth0      Link encap:Ethernet  HWaddr 00:50:8B:FE:3D:A9
          inet addr:192.168.10.39  Bcast:192.168.10.255  Mask:255.255.255.0
          inet6 addr: fe80::250:8bff:fefe:3da9/64 Scope:Link
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5692 errors:72 dropped:0 overruns:0 frame:72
          TX packets:3089 errors:1 dropped:0 overruns:0 carrier:1
          collisions:198 txqueuelen:1000
          RX bytes:496831 (485.1 Kb)  TX bytes:608844 (594.5 Kb)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:26 errors:0 dropped:0 overruns:0 frame:0
          TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2124 (2.0 Kb)  TX bytes:2124 (2.0 Kb)

tun0      Link encap:Point-to-Point Protocol
          inet addr:192.168.10.39  P-t-P:192.168.10.38  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:52 errors:0 dropped:0 overruns:0 frame:0
          TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10
          RX bytes:3225 (3.1 Kb)  TX bytes:1584 (1.5 Kb)

timsatern:~ #


--------------------------------------------------------------------
jnos> route
Destination      Len Interface Gateway          Metric P Timer  Use
44.0.0.0         8   pk0                        1        man    0
tg6124.ab0wr.net 32  tun0                       1        man    9
timsatern.ab0wr. 32  tun0                       1        man    40
default          0   tun0                       1        man    0
jnos>

-------------------------------------------------------------------
timsatern:~ # route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
saternjnos.ab0w *               255.255.255.255 UH    0      0        0 tun0
192.168.10.0    *               255.255.255.0   U     0      0        0 eth0
link-local      *               255.255.0.0     U     0      0        0 eth0
loopback        *               255.0.0.0       U     0      0        0 lo
default         tg6124.ab0wr.ne 0.0.0.0         UG    0      0        0 eth0
timsatern:~ #

---------------------------------------------------------------------

jnos> ip status
( 1)ipForwarding                 1     ( 2)ipDefaultTTL               255
( 3)ipInReceives                20     ( 4)ipInHdrErrors                0
( 5)ipInAddrErrors               0     ( 6)ipForwDatagrams              0
( 7)ipInUnknownProtos            0     ( 8)ipInDiscards                 0
( 9)ipInDelivers                20     (10)ipOutRequests               49
(11)ipOutDiscards                0     (12)ipOutNoRoutes                0
(13)ipReasmTimeout              30     (14)ipReasmReqds                 0
(15)ipReasmOKs                   0     (16)ipReasmFails                 0
(17)ipFragOKs                    0     (18)ipFragFails                  0
(19)ipFragCreates                0
jnos>
------------------------------------------------------------------------

nos> tcp status
( 1)tcpRtoAlgorithm              4     ( 2)tcpRtoMin                    0
( 3)tcpRtoMax           4294967295     ( 4)tcpMaxConn          4294967295
( 5)tcpActiveOpens               1     ( 6)tcpPassiveOpens              2
( 7)tcpAttemptFails              3     ( 8)tcpEstabResets               0
( 9)tcpCurrEstab                 0     (10)tcpInSegs                    4
(11)tcpOutSegs                   5     (12)tcpRetransSegs              15
(14)tcpInErrs                    0     (15)tcpOutRsts                   3
&TCB     Rcv-Q Snd-Q  Local socket           Remote socket          State
jnos> 

******************************************************************









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