[ LUGOS ] Problemi pri povezavi na Arnes...

Sre Apr 21 07:54:51 CEST 1999

Pozdravljen!

Vzrok za tezave je verjetno v preobremenjenosti ARNES-ovega streznika, ki
skrbi za avtentikacijo. Iz "man pppd"

       pap-max-authreq n
              Set the maximum number of PAP  authenticate-request
              transmissions to n (default 10).

       pap-restart n
              Set  the PAP restart interval (retransmission time-
              out) to n seconds (default 3).

       pap-timeout n
              Set the maximum time that pppd will  wait  for  the
              peer  to  authenticate itself with PAP to n seconds
              (0 means no limit).

razberem, da je default interval med posameznimi PAP zahtevki 3 sekunde.
Poskusaj povecati ta cas na, recimo, 15 sekund. 3 sekunde je v vecernih 
urah (ocitno) premalo :-(

Vceraj zvecer sem poskusal naslednje:
Najprej z pap-restart = 3 (default):

Apr 20 19:12:25 old486 pppd[555]: pppd 2.3.5 started by root, uid 0
--- skipped ---
Apr 20 19:12:53 old486 pppd[555]: Serial connection established.
Apr 20 19:12:54 old486 pppd[555]: Using interface ppp0
Apr 20 19:12:54 old486 pppd[555]: Connect: ppp0 <--> /dev/ttyS3
Apr 20 19:12:54 old486 pppd[555]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> 
<magic 0xefb7> <pcomp> <a
Apr 20 19:13:06 old486 last message repeated 4 times
Apr 20 19:13:08 old486 pppd[555]: rcvd [LCP ConfReq id=0xe1 <asyncmap 0xa0000> 
<auth pap> <magic 0x
Apr 20 19:13:08 old486 pppd[555]: sent [LCP ConfAck id=0xe1 <asyncmap 0xa0000> 
<auth pap> <magic 0x
Apr 20 19:13:09 old486 pppd[555]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> 
<magic 0xefb7> <pcomp> <a
Apr 20 19:13:09 old486 pppd[555]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> 
<magic 0xefb7> <pcomp> <a
Apr 20 19:13:09 old486 pppd[555]: sent [LCP EchoReq id=0x0 magic=0xefb7]
Apr 20 19:13:09 old486 pppd[555]: sent [PAP AuthReq id=0x1 user="my_username" 
password="my_password
Apr 20 19:13:11 old486 pppd[555]: rcvd [LCP ConfReq id=0xe3 <asyncmap 0xa0000> 
<auth pap> <magic 0x
Apr 20 19:13:11 old486 pppd[555]: sent [LCP ConfReq id=0x2 <asyncmap 0x0> 
<magic 0x4dff> <pcomp> <a
Apr 20 19:13:11 old486 pppd[555]: sent [LCP ConfAck id=0xe3 <asyncmap 0xa0000> 
<auth pap> <magic 0x
Apr 20 19:13:11 old486 pppd[555]: rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> 
<magic 0x4dff> <pcomp> <a
Apr 20 19:13:11 old486 pppd[555]: sent [LCP EchoReq id=0x0 magic=0x4dff]
Apr 20 19:13:11 old486 pppd[555]: sent [PAP AuthReq id=0x2 user="my_username" 
password="my_password
Apr 20 19:13:12 old486 pppd[555]: rcvd [LCP EchoRep id=0x0 magic=0xf656fe22]
Apr 20 19:13:14 old486 pppd[555]: sent [PAP AuthReq id=0x3 user="my_username" 
password="my_password
Apr 20 19:13:17 old486 pppd[555]: sent [PAP AuthReq id=0x4 user="my_username" 
password="my_password
Apr 20 19:13:20 old486 pppd[555]: sent [PAP AuthReq id=0x5 user="my_username" 
password="my_password
Apr 20 19:13:23 old486 pppd[555]: sent [PAP AuthReq id=0x6 user="my_username" 
password="my_password
Apr 20 19:13:26 old486 pppd[555]: sent [PAP AuthReq id=0x7 user="my_username" 
password="my_password
Apr 20 19:13:29 old486 pppd[555]: sent [PAP AuthReq id=0x8 user="my_username" 
password="my_password
Apr 20 19:13:32 old486 pppd[555]: sent [PAP AuthReq id=0x9 user="my_username" 
password="my_password
Apr 20 19:13:35 old486 pppd[555]: sent [PAP AuthReq id=0xa user="my_username" 
password="my_password
Apr 20 19:13:38 old486 pppd[555]: sent [PAP AuthReq id=0xb user="my_username" 
password="my_password
Apr 20 19:13:39 old486 pppd[555]: rcvd [PAP AuthAck id=0xb ""]
Apr 20 19:13:39 old486 pppd[555]: Remote message:
Apr 20 19:13:39 old486 pppd[555]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> 
<compress VJ 0f 01>]
Apr 20 19:13:48 old486 last message repeated 3 times
Apr 20 19:13:51 old486 pppd[555]: rcvd [IPCP ConfReq id=0xde <compress VJ 0f 
00> <addr 193.2.31.101
Apr 20 19:13:51 old486 pppd[555]: sent [IPCP ConfAck id=0xde <compress VJ 0f 
00> <addr 193.2.31.101
Apr 20 19:13:51 old486 pppd[555]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> 
<compress VJ 0f 01>]
Apr 20 19:13:51 old486 pppd[555]: rcvd [IPCP ConfNak id=0x1 <addr 
194.249.13.20>]
Apr 20 19:13:51 old486 pppd[555]: sent [IPCP ConfReq id=0x2 <addr 
194.249.13.20> <compress VJ 0f 01
Apr 20 19:13:53 old486 pppd[555]: rcvd [IPCP ConfAck id=0x2 <addr 
194.249.13.20> <compress VJ 0f 01
Apr 20 19:13:53 old486 pppd[555]: Cannot determine ethernet address for proxy 
ARP
Apr 20 19:13:53 old486 pppd[555]: local  IP address 194.249.13.20
Apr 20 19:13:53 old486 pppd[555]: remote IP address 193.2.31.101
Apr 20 19:14:11 old486 pppd[555]: sent [LCP EchoReq id=0x1 magic=0x4dff]
Apr 20 19:14:12 old486 pppd[555]: rcvd [LCP EchoRep id=0x1 magic=0xf656fe22]
Apr 20 19:15:11 old486 pppd[555]: sent [LCP EchoReq id=0x2 magic=0x4dff]
Apr 20 19:15:12 old486 pppd[555]: rcvd [LCP EchoRep id=0x2 magic=0xf656fe22]
--- itd ---

Nas streznik je poslal PAP AuthAck sele 30 sekund po prvem AuthReq.
Drug primer z pap-restart = 30:

Apr 20 19:17:04 old486 pppd[629]: pppd 2.3.5 started by root, uid 0
--- skipped ---
Apr 20 19:17:32 old486 pppd[629]: Serial connection established.
Apr 20 19:17:33 old486 pppd[629]: Using interface ppp0
Apr 20 19:17:33 old486 pppd[629]: Connect: ppp0 <--> /dev/ttyS3
Apr 20 19:17:33 old486 pppd[629]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> 
<magic 0xffffa861> <pcomp
Apr 20 19:17:36 old486 pppd[629]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> 
<magic 0xffffa861> <pcomp
Apr 20 19:17:39 old486 pppd[629]: rcvd [LCP ConfReq id=0x8a <asyncmap 0xa0000> 
<auth pap> <magic 0x
Apr 20 19:17:39 old486 pppd[629]: sent [LCP ConfAck id=0x8a <asyncmap 0xa0000> 
<auth pap> <magic 0x
Apr 20 19:17:40 old486 pppd[629]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> 
<magic 0xffffa861> <pcomp
Apr 20 19:17:40 old486 pppd[629]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> 
<magic 0xffffa861> <pcomp
Apr 20 19:17:40 old486 pppd[629]: sent [LCP EchoReq id=0x0 magic=0xffffa861]
Apr 20 19:17:40 old486 pppd[629]: sent [PAP AuthReq id=0x1 user="my_username" 
password="my_password
Apr 20 19:17:42 old486 pppd[629]: rcvd [LCP ConfReq id=0x8c <asyncmap 0xa0000> 
<auth pap> <magic 0x
Apr 20 19:17:42 old486 pppd[629]: sent [LCP ConfReq id=0x2 <asyncmap 0x0> 
<magic 0x3bdb> <pcomp> <a
Apr 20 19:17:42 old486 pppd[629]: sent [LCP ConfAck id=0x8c <asyncmap 0xa0000> 
<auth pap> <magic 0x
Apr 20 19:17:42 old486 pppd[629]: rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> 
<magic 0x3bdb> <pcomp> <a
Apr 20 19:17:42 old486 pppd[629]: sent [LCP EchoReq id=0x0 magic=0x3bdb]
Apr 20 19:17:42 old486 pppd[629]: sent [PAP AuthReq id=0x2 user="my_username1
Apr 20 19:17:42 old486 pppd[629]: rcvd [LCP EchoRep id=0x0 magic=0xf65b1e69]
Apr 20 19:17:47 old486 pppd[629]: rcvd [PAP AuthAck id=0x2 ""]
Apr 20 19:17:47 old486 pppd[629]: Remote message:
Apr 20 19:17:47 old486 pppd[629]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> 
<compress VJ 0f 01>]
Apr 20 19:17:50 old486 pppd[629]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> 
<compress VJ 0f 01>]
Apr 20 19:17:51 old486 pppd[629]: rcvd [IPCP ConfReq id=0xc1 <compress VJ 0f 
00> <addr 193.2.31.101
Apr 20 19:17:51 old486 pppd[629]: sent [IPCP ConfAck id=0xc1 <compress VJ 0f 
00> <addr 193.2.31.101
Apr 20 19:17:53 old486 pppd[629]: rcvd [IPCP ConfReq id=0xc2 <compress VJ 0f 
00> <addr 193.2.31.101
Apr 20 19:17:53 old486 pppd[629]: sent [IPCP ConfAck id=0xc2 <compress VJ 0f 
00> <addr 193.2.31.101
Apr 20 19:17:53 old486 pppd[629]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> 
<compress VJ 0f 01>]
Apr 20 19:17:54 old486 pppd[629]: rcvd [IPCP ConfNak id=0x1 <addr 
194.249.13.16>]
Apr 20 19:17:54 old486 pppd[629]: sent [IPCP ConfReq id=0x2 <addr 
194.249.13.16> <compress VJ 0f 01
Apr 20 19:17:56 old486 pppd[629]: rcvd [IPCP ConfAck id=0x2 <addr 
194.249.13.16> <compress VJ 0f 01
Apr 20 19:17:56 old486 pppd[629]: Cannot determine ethernet address for proxy 
ARP
Apr 20 19:17:56 old486 pppd[629]: local  IP address 194.249.13.16
Apr 20 19:17:56 old486 pppd[629]: remote IP address 193.2.31.101

V tem primeru je prisel PAP AuthAck 7 sekund po prvem AuthReq, zahtevka pa
sta bila le dva.

Seveda pa lahko poskusis tudi z "chat skripto", vendar je v tem
primeru tvoj password zapisan na disku kot plain-text, cemur se
pri PAP menda lahko izognes.

Lep pozdrav,
Matjaz Straus, ARNES.

In-reply-to: Your message dated: Mon, 19 Apr 1999 22:21:20 +0200
> Pozdravljeni!
> 
> Za tole, kar sedaj sprasujem, verjetno ni kriv Linux, ampak nekaj na Arnesovi
> strani...
> 
> Kadar klicem na stevilko 061 1797000 v bolj "prometnem" casu (beri od
> 1900-2100 :-), se ne morem povezati. Logi pokazejo tole:
> 
> [ppp.log]
> 
> 
> Apr 19 21:56:51 bachus pppd[11120]: pppd 2.3.5 started by borut, uid 1000
--- skipped ---
> 
> [SNIP]
> 
> Apr 19 21:58:01 bachus pppd[11120]: sent [PAP AuthReq id=0xc user="ssdbmra1" 
>password="password"]
> Apr 19 21:58:01 bachus pppd[11120]: sent [LCP EchoReq id=0x1 magic=0xfe182413
>]
> Apr 19 21:58:02 bachus pppd[11120]: rcvd [LCP EchoRep id=0x1 magic=0xba9171b7
>]
> Apr 19 21:58:04 bachus pppd[11120]: sent [PAP AuthReq id=0xd user="ssdbmra1" 
>password="password"]
> 
--- skipped ---
> [konec ppp.log]
> 
> Stvar deluje s popolnoma isto konfiguracijo ce poklicem na katero drugo
> stevilko, ali ce klicem ob kaksni drugi uri... To, da me server disconnecta,
> sem opazil, ker sem povecal pap-max-authreq opcijo (prej se je pri 10
> pap-authreq pritozil moj pppd ;-]
> 
> Verzija jedra je 2.2.6, vendar mislim, da to ne more vplivati...
> 
> Kaksne ideje?
> 
> lp,
> 
> -- 
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> |Borut Mrak a.k.a. PyO-GEniC, a wannabe bofh, |
> | borutm na bigfoot.com, borutmrak na hotmail.com   |
> |    phone: +386 65 51248 and 61 267876       |
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> Never underestimate the power of human stupidity.