1 For HP-UX 11i (11.11) and later, there are no known issues with
2 promiscuous mode under HP-UX. If you are using a earlier version of
3 HP-UX and cannot upgrade, please continue reading.
5 HP-UX patches to fix packet capture problems
7 Note that packet-capture programs such as tcpdump may, on HP-UX, not be
8 able to see packets sent from the machine on which they're running.
9 Some articles on groups.google.com discussing this are:
11 http://groups.google.com/groups?selm=82ld3v%2480i%241%40mamenchi.zrz.TU-Berlin.DE
15 Newsgroups: comp.sys.hp.hpux
16 Subject: Re: Did someone made tcpdump working on 10.20 ?
18 From: Lutz Jaenicke <jaenicke@emserv1.ee.TU-Berlin.DE>
20 In article <82ks5i$5vc$1@news1.dti.ne.jp>, mtsat <mtsat@iris.dti.ne.jp>
24 >I downloaded and compiled tcpdump3.4 a couple of week ago. I tried to use
25 >it, but I can only see incoming data, never outgoing.
26 >Someone (raj) explained me that a patch was missing, and that this patch
27 >must me "patched" (poked) in order to see outbound data in promiscuous mode.
28 >Many things to do .... So the question is : did someone has already this
29 >"ready to use" PHNE_**** patch ?
32 1. You do need a late "LAN products cumulative patch" (e.g. PHNE_18173
35 echo 'lanc_outbound_promisc_flag/W1' | /usr/bin/adb -w /stand/vmunix /dev/kmem
36 You can insert this e.g. into /sbin/init.d/lan
43 http://groups.google.com/groups?selm=88cf4t%24p03%241%40web1.cup.hp.com
47 Newsgroups: comp.sys.hp.hpux
48 Subject: Re: tcpdump only shows incoming packets
50 From: Rick Jones <foo@bar.baz.invalid>
52 Harald Skotnes <harald@cc.uit.no> wrote:
53 > I am running HPUX 11.0 on a C200 hanging on a 100Mb switch. I have
54 > compiled libpcap-0.4 an tcpdump-3.4 and it seems to work. But at a
55 > closer look I only get to see the incoming packets not the
56 > outgoing. I have tried tcpflow-0.12 which also uses libpcap and the
57 > same thing happens. Could someone please give me a hint on how to
60 Search/Read the archives ?-)
62 What you are seeing is expected, un-patched, behaviour for an HP-UX
63 system. On 11.00, you need to install the latest lancommon/DLPI
64 patches, and then the latest driver patch for the interface(s) in use.
65 At that point, a miracle happens and you should start seeing outbound
68 [That article also mentions the patch that appears below.]
72 http://groups.google.com/groups?selm=38AA973E.96BE7DF7%40cc.uit.no
76 Newsgroups: comp.sys.hp.hpux
77 Subject: Re: tcpdump only shows incoming packets
79 From: Harald Skotnes <harald@cc.uit.no>
85 > What you are seeing is expected, un-patched, behaviour for an HP-UX
86 > system. On 11.00, you need to install the latest lancommon/DLPI
87 > patches, and then the latest driver patch for the interface(s) in
88 > use. At that point, a miracle happens and you should start seeing
91 Thanks a lot. I have this problem on several machines running HPUX
92 10.20 and 11.00. The machines where patched up before y2k so did not
93 know what to think. Anyway I have now installed PHNE_19766,
94 PHNE_19826, PHNE_20008, PHNE_20735 on the C200 and now I can see the
95 outbound traffic too. Thanks again.
97 (although those patches may not be the ones to install - there may be
100 And another message to tcpdump-workers@tcpdump.org, from Rick Jones:
102 Date: Mon, 29 Apr 2002 15:59:55 -0700
104 To: tcpdump-workers@tcpdump.org
105 Subject: Re: [tcpdump-workers] I Can't Capture the Outbound Traffic
109 http://itrc.hp.com/ would be one place to start in a search for the most
110 up-to-date patches for DLPI and the lan driver(s) used on your system (I
111 cannot guess because 9000/800 is too generic - one hs to use the "model"
112 command these days and/or an ioscan command (see manpage) to guess what
113 the drivers (btlan[3456], gelan, etc) might be involved in addition to
116 Another option is to upgrade to 11i as outbound promiscuous mode support
117 is there in the base OS, no patches required.
121 http://groups.google.com/groups?selm=7d6gvn%24b3%241%40ocean.cup.hp.com
123 indicates that you need to install the optional STREAMS product to do
124 captures on HP-UX 9.x:
126 Newsgroups: comp.sys.hp.hpux
127 Subject: Re: tcpdump HP/UX 9.x
129 From: Rick Jones <foo@bar.baz>
131 Dave Barr (barr@cis.ohio-state.edu) wrote:
132 : Has anyone ported tcpdump (or something similar) to HP/UX 9.x?
134 I'm reasonably confident that any port of tcpdump to 9.X would require
135 the (then optional) STREAMS product. This would bring DLPI, which is
136 what one uses to access interfaces in promiscuous mode.
138 I'm not sure that HP even sells the 9.X STREAMS product any longer,
139 since HP-UX 9.X is off the pricelist (well, maybe 9.10 for the old 68K
142 Your best bet is to be up on 10.20 or better if that is at all
143 possible. If your hardware is supported by it, I'd go with HP-UX 11.
144 If you want to see the system's own outbound traffic, you'll never get
145 that functionality on 9.X, but it might happen at some point for 10.20
150 (as per other messages cited here, the ability to see the system's own
151 outbound traffic did happen).
153 Rick Jones reports that HP-UX 11i needs no patches for outbound
154 promiscuous mode support.
156 An additional note, from Jost Martin, for HP-UX 10.20:
158 Q: How do I get ethereral on HPUX to capture the _outgoing_ packets
160 A: You need to get PHNE_20892,PHNE_20725 and PHCO_10947 (or
161 newer, this is as of 4.4.00) and its dependencies. Then you can
162 enable the feature as descibed below:
164 Patch Name: PHNE_20892
165 Patch Description: s700 10.20 PCI 100Base-T cumulative patch
166 To trace the outbound packets, please do the following
167 to turn on a global promiscuous switch before running
168 the promiscuous applications like snoop or tcpdump:
170 adb -w /stand/vmunix /dev/mem
171 lanc_outbound_promisc_flag/W 1
172 (adb will echo the result showing that the flag has
175 (Thanks for this part to HP-support, Ratingen)
177 The attached hack does this and some security-related stuff
178 (thanks to hildeb@www.stahl.bau.tu-bs.de (Ralf Hildebrandt) who
179 posted the security-part some time ago)
183 (Don't switch IP-forwarding off, if you need it !)
184 Install the hack as /sbin/init.d/hacl_ip_stack (adjust
185 permissions !) and make a sequencing-symlink
186 /sbin/rc2.d/S350hack_ip_stack pointing to this script.
187 Now all this is done on every reboot.
189 According to Rick Jones, the global promiscuous switch also has to be
190 turned on for HP-UX 11.00, but not for 11i - and, in fact, the switch
191 doesn't even exist on 11i.
193 Here's the "hack_ip_stack" script:
195 -----------------------------------Cut Here-------------------------------------
198 # nettune: hack kernel parms for safety
203 # /usr/contrib/bin fuer nettune auf Pfad
204 PATH=/sbin:/usr/sbin:/usr/bin:/usr/contrib/bin
214 print "Tune IP-Stack for security"
219 print "This action is not applicable"
231 print "USAGE: $0 {start_msg | stop_msg | start | stop}" >&2
241 # tcp-Sequence-Numbers nicht mehr inkrementieren sondern random
242 # Syn-Flood-Protection an
245 # Ausgehende Packets an ethereal/tcpdump etc.
247 /usr/contrib/bin/nettune -s tcp_random_seq 2 || exit $ERROR
248 /usr/contrib/bin/nettune -s hp_syn_protect 1 || exit $ERROR
249 /usr/contrib/bin/nettune -s ip_forwarding 0 || exit $ERROR
250 echo 'ip_block_source_routed/W1' | /usr/bin/adb -w /stand/vmunix /dev/kmem || exit $ERROR
251 echo 'lanc_outbound_promisc_flag/W 1' | adb -w /stand/vmunix /dev/mem || exit $ERROR
254 -----------------------------------Cut Here-------------------------------------