sercd

sercd@lists.lysator.liu.se

11 discussions

None
by None 08 Mar '22

08 Mar '22

"Of course, "sredir" should be defined in the services file (usually /etc/services, usual values start at port 7000)" So, if you are using inetd, you can select the port to use by modifying /etc/services. If you are using xinetd, take a look at sercd.xinetd instead. >I used netstat to determine which port it was > listening on but that didn't tell me anything. It looks like sercd isn't > listening on a port so how does it communicate over the network? It's inetd/xinetd that listens on the port. -- Peter Åstrand Chief Developer Cendio www.thinlinc.com Teknikringen 3 www.cendio.se 583 30 Linköping Phone: +46-13-21 46 00

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NUMBER ONE Success System
by Tommy Lee 23 Aug '07

23 Aug '07

http://www.noss123.com/ n certain European countries, most notably in Spain, MLS companies have started up in most of the popular vacation home destinations, including Costa del Sol, the Costa Brava, etc. These companies tend to be privately owned and provide MLS access to any real estate agent paying for membership. Real estate agents pay subscription fees to an MLS company which then allow property listings to be uploaded onto their servers. Also, all subscribing real estate agents create a property search link on their own websites which links directly to the MLS service. Thus, any site visitor to any of the subscribing agents' sites will be able to find *all* properties listed on the MLS servers, even though they are visiting the website of a single agent. In effect, every single subscribing real estate agent appears to be offering exactly the same properties for sale, not unlike the situation with IDX systems in the United States. When buyers use the internet to find property, often using Google, the search results usually provide a list of real estate agents' websites in the locality which is being searched. The buyer clicks through the various websites and starts browsing properties of interest, although every site visited is offering the same properties because they are all linked to the same MLS server. The buyer then has to choose an agent (again, not very different from elsewhere), but it does force the buyer to make a decision, since all agents in the area have access to all properties and the seller's agent will benefit regardless of who brings the buyer, again very like the US. Although there are currently no regulations in Europe in relation to MLS, it may be a matter of time before its use may be viewed as a restrictive practice designed to benefit real estate agents, rather than consumers.

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use of cyclades-serial-client with CISCO AS
by Francesco Ciacca (Consultant) 28 Jan '05

28 Jan '05

Hi Peter, if you remember, i wrote you some time ago for a question about using cyclades-serial-client in conjuction with sercd. Thanx again for your help at that time. Now my company bought a CISCO AS5350, and that device will be used in my project. To be more precise, we want to use it from the linux client by means of the cyclades-serial-client. As i said, everythings worked for me until we used the sercd as server, and we were confident to be compliant also with the Cisco AS as long as they both use RFC2217. But the first when i tried to connect the cyclades-ser-cli to the CISCO AS i discovered that the solution doesn't work anymore. I tried to look in the log, the code and around the web (reaching mostly content from you) and now i think that there are some difference on the RFC2217 implementation. First of all, speed : the Cisco (as also i read in a newsgroup thread) report speed not as it receives it. Other differences: command-notification sequence: the cyclades-ser-cli blocks waiting for a response from the server, but in the case of SET_MODEMSTATE_MASK and SET_LINESTATE_MASK the Cisco doesn't send any notifycation back. I modified the code ignoring the speed sent back by the Cisco and making the two commands not blocking, but still it doesnt'work. Have you ever tried a CISCO AS as a server form cyclades-serial-client? Do you now what are the big differences between it and sercd? Con you help me in some manner to make cyclades-serial-client work also with CISCO AS? Best Regards and thanx a lot in advance Francesco Ciacca

3 3

Re: [sercd] What do I need to do ?
by Conn Clark 06 Jan '05

06 Jan '05

Peter Åstrand wrote: >> Thanks for writing this. I'm trying to figure out how to use this >>software to connect the serial port from one machine to the serial port >>of another machine over a network, or at least this is my eventual goal. > > > >>./cyclades-ser-cli -x -m 1 -p 7999 /dev/ptypx 172.16.32.3 1 >>cyclades-ser-cli /dev/ptypx: NOTICE: Using /dev/pts/1 pseudo-tty >>cyclades-ser-cli /dev/ptypx: NOTICE: Using 172.16.32.3:8000 socket >>cyclades-ser-cli /dev/ptypx: WARNING: Can't initiate connection on a >>socket : Connection refused >>cyclades-ser-cli /dev/ptypx: WARNING: Trying again ... >>cyclades-ser-cli /dev/ptypx: WARNING: Can't initiate connection on a >>socket : Connection refused >>cyclades-ser-cli /dev/ptypx: ERR: signal 2 received ( 21, 0%, 0%, >> 0%) >> >>What am I doing wrong? > > > Obviously, 172.16.32.3 does not listen on port 8000. You can verify this > with "telnet 172.16.32.3 8000". Have you restarted xinetd, and checked > it's log files? You can try running xinetd in debug mode with -d. > When I try connecting to 172.16.32.3 using telnet I get a "Connection refused" I did try restarting xinetd, I even rebooted just to be sure. Here is what xinetd spits out when I try and run the cyclades client from the other machine with debug enabled. 05/1/6@10:07:03: DEBUG: {main_loop} select returned 1 05/1/6@10:07:03: DEBUG: {server_start} Starting service telnet 05/1/6@10:07:03: DEBUG: {main_loop} active_services = 2 05/1/6@10:07:03: DEBUG: {exec_server} duping 7 When I kill it it spits this out 05/1/6@10:11:56: DEBUG: {check_flags} flag entry 0 processed 05/1/6@10:11:56: DEBUG: {child_exit} waitpid returned = 2590 05/1/6@10:11:56: DEBUG: {server_end} telnet server 2590 exited 05/1/6@10:11:56: DEBUG: {child_exit} waitpid returned = -1 05/1/6@10:11:56: DEBUG: {main_loop} active_services = 2 running minicom with the command "minicom -p /dev/ptypx" gives me a login prompt to 172.16.32.3 so I think its starting telnet instead of sercd. -- Conn ***************************************************************** Give a man a match and you heat him for a moment. Set him on fire and you'll heat him for life. ***************************************************************** Conn Clark Engineering Stooge clark(a)esteem.com Electronic Systems Technology Inc. www.esteem.com Stock Ticker Symbol ELST

2 2

What do I need to do ?
by Conn Clark 05 Jan '05

05 Jan '05

Hi, Thanks for writing this. I'm trying to figure out how to use this software to connect the serial port from one machine to the serial port of another machine over a network, or at least this is my eventual goal. Right now I can't figure out how to get it to work just using the cyclades-serial-client-0.93 . Here is what I have done so far. I added the following line to my /etc/services sredir 8000/tcp # serial port redirector I used 8000 because 7000 was used for something else. I'm using xinetd and here is my config file for that # default: on # description: RFC 2217 compliant Telnet serial port redirector service sredir { type = UNLISTED flags = REUSE socket_type = stream protocol = tcp wait = no user = root server = /usr/local/sbin/sercd server_args = 5 /dev/ttyS0 /var/lock/LCK..ttyS0 port = 8000 disable = no # Some versions of xinetd does not work with only_from=localhost # only_from = localhost } I then try to start the cyclades client on the remote machine and get the following ./cyclades-ser-cli -x -m 1 -p 7999 /dev/ptypx 172.16.32.3 1 cyclades-ser-cli /dev/ptypx: NOTICE: Using /dev/pts/1 pseudo-tty cyclades-ser-cli /dev/ptypx: NOTICE: Using 172.16.32.3:8000 socket cyclades-ser-cli /dev/ptypx: WARNING: Can't initiate connection on a socket : Connection refused cyclades-ser-cli /dev/ptypx: WARNING: Trying again ... cyclades-ser-cli /dev/ptypx: WARNING: Can't initiate connection on a socket : Connection refused cyclades-ser-cli /dev/ptypx: ERR: signal 2 received ( 21, 0%, 0%, 0%) What am I doing wrong? Thank You, -- Conn Clark ***************************************************************** Give a man a match and you heat him for a moment. Set him on fire and you'll heat him for life. ***************************************************************** Conn Clark Engineering Stooge clark(a)esteem.com Electronic Systems Technology Inc. www.esteem.com Stock Ticker Symbol ELST

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Modem pooling
by Mace.Scott＠tatravelcenters.com 29 Dec '04

29 Dec '04

Hello, I just downloaded your software, and before I get too far down the path of installing it, I was wondering how it handled multiple modems and pooling. I'm currently using Dialout/IP Server, but it looks like that isn't being maintained anymore, and I'd like to have something on a more stable linux platform, instead of the WinNT we have now. Dialout/IP assigns port 7001 on up for modems, and it looks like 7000 for the hunt group. Any ideas on how to handle this? I've got 8 modems I want to have available to my users. Thanks! ========================= Scott Mace Security Administrator Travelcenters of America 440-808-4318 mace.scott(a)tatravelcenters.com =========================

2 1

I have it running, now how do I use it o ?
by Tom Brown 18 Dec '04

18 Dec '04

I can run sercd and it will output what is on the serial port. Now I want to connect to sercd over the network. I'd like to use telnet but I don't know which port to use. I looked through the README and the source and didn't see anything about a port to use. I used netstat to determine which port it was listening on but that didn't tell me anything. It looks like sercd isn't listening on a port so how does it communicate over the network? Thanks, Tom

2 1

sercd 2.3.1: security fixes
by Peter Åstrand 01 Aug '04

01 Aug '04

sercd 2.3.1 has been released. This version corrects two security vulnerabilities, which can potentially lead to a remote root compromise. /Peter Åstrand <astrand(a)lysator.liu.se>

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Returned mail: see transcript for details
by Returned mail 26 Jul '04

26 Jul '04

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Good Day
by Taylor Brown 16 Jun '04

16 Jun '04

Attn: Directors/Owners My name is Taylor Brown, I am a resident in moronvia, the capital City of Liberia. I was the honorable minister for special duties during Charles Taylor?s government as the president of Liberia, During the war,I decided to move out of my country through a neibgouring country to the island of Mauritius near the Indian ocean for cover [Exile] with my remaining family. I Urgently wish to invest in real estate properties e.g. Houses, hotels and landed property in your country and any other lucrative sphere of business you maydeem fit and profitable, But most importantly I urgently wants to buy houses/properties so that I can relocate my entire family because I do not intent to go back to my country Liberia,and this is the reason why i am in contact with you as as a funds/property manager.On receipt of your positive response I shall forward to you more details on the exact role that is required of you for the successful conclusion of this transaction thus I am seeking for your assistant and coperation. And if you feel you could be of assistant, I shall need you to get back to me as soon as possible via my private email(tay_brown1(a)yahoo.co.uk ). I await your response. Regards Taylor

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sercd