Re: TFTPD timeout

From: Maxim V Tretjyakov (knyaz_at_dom-sp.ru)
Date: 10/30/04

  • Next message: Warren Liddell: "FireFox crash on Print" 
    Date: Sat, 30 Oct 2004 23:38:03 +0600
To: freebsd-stable@freebsd.org

    Hello freebsd-stable,

      tftp-client connects to server from local ethernet network or localhost and
      recieves timeout any time. I post it there:
    load# tftp localhost
    tftp> get pxeboot
    Transfer timed out.

    About firewall, here are rules. rl0 sees internal network and rl1 -
    external. As i see it isn't drop tftp packets.
    load# ipfw show
    00100 0 0 deny tcp from any to any 135
    00200 0 0 deny tcp from any to any 137
    00300 45 2160 deny tcp from any to any 139
    00400 2040 97920 deny tcp from any to any 445
    00500 0 0 deny udp from any to any 135
    00600 7815 676440 deny udp from any to any 137
    00700 0 0 deny udp from any to any 139
    00800 0 0 deny udp from any to any 445
    00900 0 0 deny icmp from any to any in icmptype 9,13,14,15,16,17
    01000 0 0 deny ip from any to 0.0.0.0/8 via rl1
    01100 0 0 deny ip from any to 169.254.0.0/16 via rl1
    01200 0 0 deny ip from any to 192.0.2.0/24 via rl1
    01300 0 0 deny ip from any to 198.18.0.0/15 via rl1
    01400 0 0 deny ip from any to 224.0.0.0/4 via rl1
    01500 3 144 deny ip from any to 10.0.0.0/8 via rl1
    01600 0 0 deny ip from any to 172.16.0.0/12 via rl1
    01700 0 0 deny ip from any to 240.0.0.0/4 via rl1
    01800 41532 3467663 allow tcp from 172.16.3.22 to me 22 via rl0
    01900 0 0 allow tcp from 172.16.3.2 to me 22 via rl0
    02000 0 0 allow tcp from 172.16.3.18 to me 22 via rl0
    02100 0 0 allow tcp from 172.16.3.28 to me 22 via rl0
    02200 74 4466 allow tcp from 172.16.3.9 to me 22 via rl0
    02300 0 0 allow tcp from 172.16.1.220 to me 22 via rl0
    02400 0 0 allow tcp from 172.16.1.238 to me 22 via rl0
    02500 0 0 deny tcp from any to me 22
    02600 0 0 allow tcp from 172.16.1.0/24 to me 20,21 via rl0
    02700 370545 523976007 allow tcp from 172.16.3.0/24 to me 20,21 via rl0
    02800 0 0 allow tcp from 212.57.164.64/26 to me 20,21 via rl0
    02900 0 0 allow tcp from 83.164.86.0/24 to me 20,21 via rl0
    03000 0 0 allow tcp from 62.165.36.56/30 to me 20,21 via rl0
    03100 0 0 deny tcp from any to me 20,21
    03200 4358843 1952438540 divert 8668 ip from any to any via rl1
    65535 111202688 57901604051 allow ip from any to any

    At all, here is uname -a of a machine with tftpd:
    load# uname -a
    FreeBSD load.dom-sp.ru 4.10-STABLE FreeBSD 4.10-STABLE #6: Fri Jul 23 16:41:07 YEKST 2004 knyaz@kl-nat.dom-sp.ru:/usr/src/sys/compile/MYCONF i386

    Also, tcpdump sees repeating RRQ requests, when i try to get file from
    my workstation:
    load# tcpdump port tftp
    tcpdump: listening on rl0
    23:36:04.043609 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 19 RRQ "pxeboot"
    23:36:05.059834 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 19 RRQ "pxeboot"
    23:36:07.045206 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 19 RRQ "pxeboot"
    23:36:11.062940 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 19 RRQ "pxeboot"
    23:36:19.067046 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 19 RRQ "pxeboot"
    23:36:27.071147 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 19 RRQ "pxeboot"
    23:36:35.247173 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 19 RRQ "pxeboot"
    23:36:43.079383 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 19 RRQ "pxeboot"
    23:36:51.083506 tmv-dialup.cadkey-tablet > load.dom-sp.ru.tftp: 23 ERROR EUNDEF timeout on receive"
    ^C
    345 packets received by filter
    0 packets dropped by kernel 

    -- 
Best wishes,
Maxim V. Tretjyakov
Network administrator and telephony engineer
Enterprise Sukhov
tel.: +7 3512 672969
fax.: +7 3512 672969
mailto:knyaz@dom-sp.ru
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