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90d8d4619b
If you run the arp-scan tool cyclically, the kernel messages for promiscuous mode are very annoying. This backports an upstream patch to disable the unnecessary promiscuous mode in arp-scan. Signed-off-by: Martin Schiller <ms@dev.tdt.de>
53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
From 51311e645e3deb9917cafcaac3a430c614769ad4 Mon Sep 17 00:00:00 2001
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From: Roy Hills <royhills@hotmail.com>
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Date: Sat, 4 Feb 2023 12:21:40 +0000
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Subject: [PATCH] Disable promiscuous mode (#142)
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* Disable promiscuous mode
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* Update ChangeLog and NEWS.md
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---
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ChangeLog | 6 ++++++
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NEWS.md | 1 +
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arp-scan.h | 2 +-
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3 files changed, 8 insertions(+), 1 deletion(-)
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,3 +1,9 @@
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+2023-02-04 Roy Hills <royhills@hotmail.com>
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+
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+ * arp-scan.h: Disable promiscuous mode on the network interface.
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+ Promiscuous mode is not required to receive ARP response packets
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+ because they are unicast packets directed to the scanning host.
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+
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2022-12-10 Roy Hills <royhills@hotmail.com>
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* configure.ac: Set version to 1.10.0.
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--- a/NEWS.md
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+++ b/NEWS.md
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@@ -1,6 +1,12 @@
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**This file gives a brief overview of the major changes between each arp-scan
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release. For more details please read the ChangeLog file.**
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+# 2023-02-26 arp-scan 1.10.1-git (in development)
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+
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+* Fixed Bugs:
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+
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+ - Do not enable promiscuous mode on the network interface as it is not needed.
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+
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# 2022-12-10 arp-scan 1.10.0 (git tag 1.10.0)
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## New Features
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--- a/arp-scan.h
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+++ b/arp-scan.h
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@@ -144,7 +144,7 @@
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#define DEFAULT_RETRY 2 /* Default number of retries */
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#define DEFAULT_TIMEOUT 500 /* Default per-host timeout in ms */
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#define SNAPLEN 64 /* 14 (ether) + 28 (ARP) + extra */
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-#define PROMISC 1 /* Enable promiscuous mode */
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+#define PROMISC 0 /* Promiscuous mode 0=off, 1=on */
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#define TO_MS 1000 /* Timeout for pcap_set_timeout() */
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#define OPTIMISE 1 /* Optimise pcap filter */
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#define ARPHRD_ETHER 1 /* Ethernet ARP type */
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