Ethernet - Revision history

Porcelinux: /* Cisco */

2021-06-11T12:49:28Z

Cisco

← Older revision		Revision as of 12:49, 11 June 2021
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	== Linux Routing Table		== Linux Routing Table ==

	*:example data		*:example data
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	ip route show table main		ip route show table main

	*create 2 new ~~tables, one~~ for ~~each~~ uplink2		*create the new table for uplink2

	echo 202 uplink2 >> /etc/iproute2/rt_tables		echo 202 uplink2 >> /etc/iproute2/rt_tables

Porcelinux at 12:48, 11 June 2021

2021-06-11T12:48:33Z

← Older revision		Revision as of 12:48, 11 June 2021
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	ip route show table main		ip route show table main

	*create 2 new tables, one for each ~~uplink(1,2)~~		*create 2 new tables, one for each uplink2
	~~echo 201 uplink1 >> /etc/iproute2/rt_tables~~
	echo 202 uplink2 >> /etc/iproute2/rt_tables		echo 202 uplink2 >> /etc/iproute2/rt_tables

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	ip route add default via 1.2.3.1 table uplink2		ip route add default via 1.2.3.1 table uplink2
	ip rule add from 1.2.3.4 table uplink2		ip rule add from 1.2.3.4 table uplink2

	~~ip route add 192.168.0.1/32 dev ens32 src 192.168.0.2 table uplink1~~
	~~ip route add default via 192.168.0.1 table uplink1~~
	~~ip rule add from 192.168.0.2 table uplink1~~

Porcelinux at 11:30, 11 June 2021

2021-06-11T11:30:53Z

← Older revision		Revision as of 11:30, 11 June 2021
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	<cr>		<cr>
	cisco-6500(config-if)#spanning-tree portfast		cisco-6500(config-if)#spanning-tree portfast



			== Linux Routing Table

			*:example data
			uplink1_ip=192.168.0.2
			uplink1_gw=192.168.0.1
			uplink1_if=ens31

			uplink2_ip=1.2.3.4
			uplink2_gw=1.2.3.1
			uplink2_if=ens32

			*show main table (and save)
			ip route show table main

			*create 2 new tables, one for each uplink(1,2)
			echo 201 uplink1 >> /etc/iproute2/rt_tables
			echo 202 uplink2 >> /etc/iproute2/rt_tables

			ip route add 1.2.3.1/32 dev ens32 src 1.2.3.4 table uplink2
			ip route add default via 1.2.3.1 table uplink2
			ip rule add from 1.2.3.4 table uplink2

			ip route add 192.168.0.1/32 dev ens32 src 192.168.0.2 table uplink1
			ip route add default via 192.168.0.1 table uplink1
			ip rule add from 192.168.0.2 table uplink1

Xunil at 14:18, 6 April 2014

2014-04-06T14:18:30Z

← Older revision		Revision as of 14:18, 6 April 2014
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	* this command will scan all host in the 10.10.10.0/24 subnet		* this command will scan all host in the 10.10.10.0/24 subnet
	nmap -sP 10.10.10.0-254		nmap -sP 10.10.10.0-254
			nmap -sP 192.168.82.0/24
	== Cisco ==		== Cisco ==
	* para conectar un host directo a un puerto de un router (Cisco)		* para conectar un host directo a un puerto de un router (Cisco)

Xunil: /* general Linux commands */

2014-03-20T18:14:31Z

general Linux commands

← Older revision		Revision as of 18:14, 20 March 2014
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	* attivare la scheda di rete eth0 (senza script di ifup/ifdown)		* attivare la scheda di rete eth0 (senza script di ifup/ifdown)
	ifconfig eth0 up		ifconfig eth0 up
			* disattivare la scheda di rete eth0 (senza script di ifup/ifdown)
			ifconfig eth0 down
	* Chiedere in broadcast un indirizzo ip su eth0 (!!!)		* Chiedere in broadcast un indirizzo ip su eth0 (!!!)
	dhclient eth0		dhclient eth0

Xunil: /* host scanning */

2013-10-22T10:36:28Z

host scanning

← Older revision		Revision as of 10:36, 22 October 2013
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	== host scanning ==		== host scanning ==

	* '''nmap''' is the master tool, then everything follows.		* '''nmap''' is the master tool, then everything follows.
	nmap <host>		nmap <host>


	* a more specific scan, suggested from [[http://www.gavinpearce.com/blog/check-for-valid-server-name-using-url-rewrite-else-redirect-182\| Gavin Pearce]]		* a more specific scan, suggested from [[http://www.gavinpearce.com/blog/check-for-valid-server-name-using-url-rewrite-else-redirect-182\| Gavin Pearce]]
	nmap -sS -p0-65535 -P0 -T4 --osscan_limit --osscan_guess --host_timeout 15m --max-retries 0 --min_parallelism 100 --max_parallelism 500 -O -oX -V <host>		nmap -sS -p0-65535 -P0 -T4 --osscan_limit --osscan_guess --host_timeout 15m --max-retries 0 --min_parallelism 100 --max_parallelism 500 -O -oX -V <host>

Xunil: /* host scanning */

2013-10-22T10:36:15Z

host scanning

← Older revision		Revision as of 10:36, 22 October 2013
Line 23:		Line 23:
	* a more specific scan, suggested from [[http://www.gavinpearce.com/blog/check-for-valid-server-name-using-url-rewrite-else-redirect-182\| Gavin Pearce]]		* a more specific scan, suggested from [[http://www.gavinpearce.com/blog/check-for-valid-server-name-using-url-rewrite-else-redirect-182\| Gavin Pearce]]
	nmap -sS -p0-65535 -P0 -T4 --osscan_limit --osscan_guess --host_timeout 15m --max-retries 0 --min_parallelism 100 --max_parallelism 500 -O -oX -V <host>		nmap -sS -p0-65535 -P0 -T4 --osscan_limit --osscan_guess --host_timeout 15m --max-retries 0 --min_parallelism 100 --max_parallelism 500 -O -oX -V <host>

			== subnet scan ==
			* this command will scan all host in the 10.10.10.0/24 subnet
			nmap -sP 10.10.10.0-254

	== Cisco ==		== Cisco ==

Xunil: /* general Linux commands */

2012-02-27T20:36:44Z

general Linux commands

← Older revision		Revision as of 20:36, 27 February 2012
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	# tail -50 /var/log/messages \|grep -A4 eth0		# tail -50 /var/log/messages \|grep -A4 eth0
	NETDEV WATCHDOG: eth0: transmit timed out		NETDEV WATCHDOG: eth0: transmit timed out
	Mar 26 14:21:39 ~~porcellino~~ kernel: eth0: transmit timed out, tx_status 00 status e000.		Mar 26 14:21:39 kernel: eth0: transmit timed out, tx_status 00 status e000.
	Mar 26 14:21:39 ~~porcellino~~ kernel: diagnostics: net 0cf2 media 8880 dma 000000a0 fifo 0000		Mar 26 14:21:39 kernel: diagnostics: net 0cf2 media 8880 dma 000000a0 fifo 0000
	Mar 26 14:21:39 ~~porcellino~~ kernel: Flags; bus-master 1, dirty 1048374(6) current 1048390(6)		Mar 26 14:21:39 kernel: Flags; bus-master 1, dirty 1048374(6) current 1048390(6)
	Mar 26 14:21:39 ~~porcellino~~ kernel: Transmit list 16c7f5c0 vs. d6c7f5c0.		Mar 26 14:21:39 kernel: Transmit list 16c7f5c0 vs. d6c7f5c0.
	* scanneriz1zare una rete privata:		* scanneriz1zare una rete privata:
	for a in `seq 1 254`; do echo -n -e "\r $a ";ping -c1 192.168.1.$a\|grep "bytes from "; done		for a in `seq 1 254`; do echo -n -e "\r $a ";ping -c1 192.168.1.$a\|grep "bytes from "; done

Xunil at 16:15, 4 October 2011

2011-10-04T16:15:44Z

← Older revision		Revision as of 16:15, 4 October 2011
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	* Avere informazioni su tutte le interfaccie di rete:		== general Linux commands ==
	== ~~Ethernet in~~ Linux ==
	ifconfig -a		ifconfig -a
	* attivare la scheda di rete eth0 (senza script di ifup/ifdown)		* attivare la scheda di rete eth0 (senza script di ifup/ifdown)
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	for a in `seq 1 254`; do echo -n -e "\r $a ";ping -c1 192.168.1.$a\|grep "bytes from "; done		for a in `seq 1 254`; do echo -n -e "\r $a ";ping -c1 192.168.1.$a\|grep "bytes from "; done

	== ~~Network~~ ==		== host scanning ==

			* '''nmap''' is the master tool, then everything follows.
			nmap <host>


			* a more specific scan, suggested from [[http://www.gavinpearce.com/blog/check-for-valid-server-name-using-url-rewrite-else-redirect-182\| Gavin Pearce]]
			nmap -sS -p0-65535 -P0 -T4 --osscan_limit --osscan_guess --host_timeout 15m --max-retries 0 --min_parallelism 100 --max_parallelism 500 -O -oX -V <host>

			== Cisco ==
	* para conectar un host directo a un puerto de un router (Cisco)		* para conectar un host directo a un puerto de un router (Cisco)
	cisco-6500#		cisco-6500#

Xunil: Reverted edits by Ypebezimyx (Talk) to last version by 127.0.0.1

2010-11-18T14:55:17Z

Reverted edits by Ypebezimyx (Talk) to last version by 127.0.0.1

New page

* Avere informazioni su tutte le interfaccie di rete:
== Ethernet in Linux ==
ifconfig -a
* attivare la scheda di rete eth0 (senza script di ifup/ifdown)
ifconfig eth0 up
* Chiedere in broadcast un indirizzo ip su eth0 (!!!)
dhclient eth0
* Sapere se hai problemi con la scheda (il NIC)
# tail -50 /var/log/messages |grep -A4 eth0
NETDEV WATCHDOG: eth0: transmit timed out
Mar 26 14:21:39 porcellino kernel: eth0: transmit timed out, tx_status 00 status e000.
Mar 26 14:21:39 porcellino kernel: diagnostics: net 0cf2 media 8880 dma 000000a0 fifo 0000
Mar 26 14:21:39 porcellino kernel: Flags; bus-master 1, dirty 1048374(6) current 1048390(6)
Mar 26 14:21:39 porcellino kernel: Transmit list 16c7f5c0 vs. d6c7f5c0.
* scanneriz1zare una rete privata:
for a in `seq 1 254`; do echo -n -e "\r $a ";ping -c1 192.168.1.$a|grep "bytes from "; done

== Network ==
* para conectar un host directo a un puerto de un router (Cisco)
cisco-6500#
cisco-6500#conf t
cisco-6500(config)#int gi3/44
cisco-6500(config-if)#spanning-tree port ?
port-priority portfast
cisco-6500(config-if)#spanning-tree portfast ?
disable Disable portfast for this interface
trunk Enable portfast on the interface even in trunk mode
<cr>
cisco-6500(config-if)#spanning-tree portfast