Netctl multiple connections?

Hello,
I welcome myself to a new distro & a new forum!
i just installed and configured my machine, when i saw the news: "users are urged to move to using netctl".
but, the k.i.s.s. (or is it k.i.s.?) principle makes it easy & transparent...
so, no problem there.
i was just wondering if it's possible to have multiple connections with netctl?
i have mobile broadband plus the option to connect to an open wlan.
with netctl, i can only connect to either one.
however i set up ppp0 to connect as per this wiki article.
so, i connect wlan with netctl, and i connect mobile broadband with pppd.
a small network monitor panel applet tells me now that both connections are up (although i don't see any movement in the mobile broadband connection).
can ntctl handle 2 connections simultaneously or is my current setup the best?
regards,
o.

This is not very important since my network connections are both working.
however, this is something i have been wondering for a long while. and hoping to achieve, since both connections are very poor at times, so some kind of combining of bandwidth is what i'm looking for. if that is even possible.
i websearched "linux multiple network connections"; the results suggest that this is possible, but it's way beyond my abilities at this moment.
i'd love to learn more about networking but don't know where to start...
but maybe suitable utilities already exist?
trying to provide more info:
i'm using 2 adapters, mobile broadband/3G:
$ lsusb | grep Huawei
Bus 002 Device 004: ID 12d1:1003 Huawei Technologies Co., Ltd. E220 HSDPA Modem / E230/E270/E870 HSDPA/HSUPA Modem
$ dmesg | grep HUAWEI
[ 3.921232] scsi 7:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2
[ 3.921973] scsi 8:0:0:0: Direct-Access HUAWEI SD Storage 2.31 PQ: 0 ANSI: 2
and wlan, hardinfo says:
Ethernet controller : Atheros Communications Inc. AR242x / AR542x Wireless Network Adapter
dmesg | grep Atheros
[ 7.415481] ath5k: phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
i set up my mobile broadband connection as per the link in the first post.
i set up netctl as per the wiki article for both wlan and mobile broadband.
all settings are defaults taken straight from arch linux wiki pages, but i can supply more info if needed.
my archlinux is a very recent install (~2 weeks) with 1 kernel upgrade so far:
# uname -a
Linux xxx 3.9.0-2-ARCH #1 SMP PREEMPT Tue Apr 30 09:48:29 CEST 2013 x86_64 GNU/Linux
so, with or without netctl, is it possible to have multiple network connections up and working together? joining forces, so to speak?

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1) Let say that my server can handle multiple
connections. This is to cater for the different
requests from the client. For instance, the client may
make one connection for chatting and another
connection for sending file(something like we have in
Yahoo Messanger). So, at the server side, how can I
differentiate between the connection for CHAT and the
connection for SEND FILE so that I can handle the
requests separately. It means I can save the file sent
from client and display the chat message in the
JTextArea?Either your server listens on two different ports for two different protocolls, (then you would a server thread for each port) or you accept connections for both protocolls on both ports, and have the client state what protocoll it is using :
eg:
accept Connection - start new Thread - read first line - depending on protocoll pass protocoll object (CHAT, FTP) to run method
There is an example for a simple protocoll at : http://java.sun.com/docs/books/tutorial/networking/sockets/clientServer.html
2) How can I stop the server, clean up the thread and
start the server again for waiting new connection?
Currently, I can just start my server once.You normally start servers only once. It should then be up and listening for it's entire lifetime. Restarting a server should only be needed if it hangs or crashes.

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Hi John,
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Hi John,
I am still facing the some problem.
I have updated the join with the expression like yours
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org.apache.bsf.BSFException: exception from Jython:
Traceback (innermost last):
File "<string>", line 26, in ?
java.sql.SQLException: Table not found: EXCEPTION in statement [select   C1_PERIOD    "Period",C2_ACCOUNT    "Account",C3_ENTITY    "Entity",C4_EMPLOYEE    "Employee",C5_YEAR    "Year",C6_SCENARIO    "Scenario",C7_VERSION    "Version",'Local'    "Currency",'HSP_InputValue'    "HSP_Rates",CASE WHEN C10_ENTRY_ID IS NULL
THEN C8_DATA
ELSE C10_ENTRY_ID
END    "Data" from "C$_1Totplan_WrkforceData"   left outer join "C$_0Totplan_WrkforceData"   ON C8_DATA=C11_NAME
AND C9_ENUMERATION_ID=
(SELECT ENUMERATION_ID FROM Exception]
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java.sql.SQLException: java.sql.SQLException: Table not found: EXCEPTION in statement [select   C1_PERIOD    "Period",C2_ACCOUNT    "Account",C3_ENTITY    "Entity",C4_EMPLOYEE    "Employee",C5_YEAR    "Year",C6_SCENARIO    "Scenario",C7_VERSION    "Version",'Local'    "Currency",'HSP_InputValue'    "HSP_Rates",CASE WHEN C10_ENTRY_ID IS NULL
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AND C9_ENUMERATION_ID=
(SELECT ENUMERATION_ID FROM Exception]
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Edited by: Sravan Ganti on May 4, 2009 6:07 AM

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Understanding Replication Between Sites
http://technet.microsoft.com/en-us/library/cc771251.aspx
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PRO*C에서 MULTIPLE CONNECTION 방법

제품 : PRECOMPILERS
작성날짜 : 1997-02-04
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Pro*C에서 Multiple Connection 방법
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1. Explicit Connection
EXEC SQL DECLARE database_name DATABASE;
EXEC SQL CONNECT :username IDENTIFIED BY :password
AT database_name USING :database_string;
. database_name : Precompiler에서의 identifier
. database_string : remote node에 접속하는 SQL*Net syntax
1) SQL Operation
EXEC SQL AT database_name SELECT ...
EXEC SQL AT database_name INSERT ...
EXEC SQL AT database_name UPDATE ...
EXEC SQL AT database_name COMMIT ...
2) PL/SQL Block
EXEC SQL AT database_name EXECUTE
begin
/* PL/SQL block here */
end;
END-EXEC;
3) Cursor Control
EXEC SQL AT database_name DECLARE cursor_name CURSOR FOR ...
EXEC SQL OPEN cursor_name ...
DECALRE문장에만 AT database_name이 들어가며 OPEN, FETCH,
CLOSE문에서는 AT 문을 사용하지 않는다.
4) Dynamic SQL
Dynamic Method 1에서는 execute시점에 At문을 사용한다.
EXEC SQL AT database_name EXECUTE IMMEDIATE :sql_stmt;
Dynamic Method 2,3,4에서는 DECLARE STATEMENT에서만 AT문을
사용한다.
EXEC SQL AT database_name DECLARE sql_stmt STATEMENT;
EXEC SQL PREPARE sql_stmt FROM :sql_string;
* host variable로 선언하여 사용할 수도 있다.
char username[10] = "scott";
char password[10] = "tiger";
char db_name[10] = "oracle1";
char db_string[20] = "NYNON";
EXEC SQL CONNECT :username IDENTIFIED BY :password
AT :db_name USING :db_string;
EXEC SQL AT :db_name DELETE ...
- DECLARE DATABASE 문이 필요하지 않으나 SQL Operation시에
사용되는 table들에 대해서 DECLARE TABLE 문을 사용해야
precompile시에 warning을 발생시키지 않는다.
2. Implicit Connection
database link를 사용하여 non-default database를 access한다.
EXEC SQL SELECT ENAME,JOB INTO :emp_name, :job_title
FROM emp@db_link
(database link는 미리 create 되어 있어야 한다.
CREATE DATABASE LINK db_link
CONNECT TO scott IDENTIFIED BY tiger
USING 'T:krhost:SID'; )
이것은 v1 방법이고 , v2 에서는 tnsnames.ora file 의 alias 를 ' ' 안에 써준다.

Hi @seperiz
Have you tried rebooting your router? try unplugging it for 10 seconds, akkow it 2-3 minutes to start till you able to access the web and then turn the printer off and on again.
May you see any difference then?
If the same persists, how far the printer is located from your router? I suggest ensuring it is not too far, but not too close either... 203 meters away would be an optimal distance.
Hope that may help.
Shlomi
Say thanks by clicking the Kudos thumb up in the post.
If my post resolve your problem please mark it as an Accepted Solution

Can we open multiple connections to APNS Feedback Server

Hi,
Is it recommended/allowed to open multiple connections to APNS feedback server to poll the bad tokens?
The idea is to run a timer task (every hour) on a n application server which will poll the apns feedback server to retrieve the bad tokens and then close the connection every one hour from N app srevers.
If it is allowed, can multiple parallel connection get the same bad device tokens connected/read at same time?

You are literally correct in that IP addresses can be spoofed.
But the same argument can be made about any single, known, form of security.
If I know it is the fingerprint from your left index finger that is required ... I've no doubt I can break in if I want to badly enough. Sorry about the finger.
Security comes from layering multiple, unknown, security measures.
Mix invited nodes with a known userid
SELECT sys_context('USERENV', 'OS_USER') FROM dual;
and the hacker has to know both a valid IP address and who is supposed to be there.
Now on top of that add the operating system information:
SELECT sys_context('USERENV', 'TERMINAL') FROM dual;
and it becomes a bit more difficult.
Layer on a few more and it becomes exceedingly unlikely anyone will get in that doesn't belong there.

Netctl multiple connections?

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