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Questions tagged [protocol]

47 questions
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Exim error SMTP call from [X.X.X.X]:50135 dropped: too many syntax or protocol error

My clients server access keeps getting blocked by CSF. The Exim log produces: no host name found for IP address X.X.X.X Exim error SMTP call from [X.X.X.X]:50135 dropped: too many syntax or protocol error. Am I correct in assuming that this can…
Lance Davey
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Why does VNC viewer on Mac Book Pro report RFB protocol error when connecting to AWS over L2TP?

There is a small group of us working on Amazon Web Services (AWS), we use mac books as our desktop machines and VNC into servers running on AWS. The problem started when we upgraded our VPN from PPTP to L2TP (Centos 6 with Openswan). My colleague…
Ross Addinall
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How to configure nDPI for iptables

I am new to nDPI, I have installed nDPI but when I add rules like; iptables -I OUTPUT -m ndpi --http -j REJECT It shows this error iptables v1.4.7: Couldn't load match 'ndpi':/lib64/xtables/libipt_ndpi.so: cannot open shared object file: No such…
zuhair
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SNMP protocol and acceptance of the hyphen character

I'm no expert at the SNMP protocol and I've failed to find anything in the protocol RFC documentation regarding the tolerance of hyphens in the SNMP community string. It appears to be a double standard where some devices such as Cisco support it…
Sn3akyP3t3
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SCEP Protocol on Linux

Is it possible to setup an SCEP protocol on Linux? My company is going to be adopting over-the-air enrolling for iPads and I can't find anything for this on Linux. Has anyone done this before? Is it possible?
Ben
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Will firewalls block my non-HTTP network protocol even if I use TCP port 80?

I want to create a simple JSON-based protocol to allow my game to talk to my custom server, but I don't want embed it in HTTP. If I send a custom text-based protocol request to my server on port 80, will firewalls block it for not using HTTP format,…
MindJuice
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nginx default SSL SNI host overwrites SSL Protocols

I have setup nginx with SSL (SNI based). My first served vHost uses server { ... listen 443 ssl; server_name host1; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; .... On others vhosts I wanted to be stricter and only allow TLSv1.2 server { ... …
lockdoc
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What authentication protocols are negotiated by HP Printers to Windows Server Shares?

I am trying to find information specifying the protocol negotiation process for newer HP printers that can perform direct scans to Windows-style shared folders - in particular, the HP 8600-series is of interest. Do they support client…
David W
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EPP Protocol create multiple domains in one command

I've seen command can check multiple domains in one command. Is it possible to do the same for the ? …
giannis christofakis
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What protocol does Exchange use to relay email to other Exchange servers?

Suppose an organization has multiple Exchange servers. These Exchange servers can use SMTP to relay email to each other. In this case, they would probably use some Exchange-proprietary extensions, such as XEXCH50 and X-LINK2STATE. Question: Is…
james.garriss
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how to set open Launch Application via group policy for callTo protocol

I have implemented callTo protocol to call a dialer and vbs script from web page within the intranet. I have deployed the registry to all machines in network via group policy and his all works fine. how ever on a new machine I get the dialog box…
shorif2000
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Is the port number the same when connecting to git via the git+ssh protocol?

I was wondering when connecting to a git repository, does the git+ssh protocol use the same port number as just using the git protocol. For example: git://example.com/git/helloworld git+ssh://root@example.com/git/helloworld I am trying to push to a…
Tomek
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IMAP server responds with "BAD..." error to "LIST..." after similar "LIST" command completes successfully

I'm getting a BAD... error when running a LIST command against an IMAP server that I'm not understanding and could use some help with. I run almost an identical command just prior to it to list the root mailboxes and have no problem, but then as I…
oucil
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Do ports change for every request? Are Ip ports are different from system ports?

A typical ip address has >65k ports then again a system that runs localhost offline has port which sometimes face conflicts. Am very under-read in this area please give some light. Pardon my English. Thanks
saul
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Is RFC 7231 the latest version about the HTTP/1.1 protocol?

I'm doing an university work on HTTP and I try to explain what happens when there is an HTTP connection between a client and a server. To do this, I'm using the "curl -v -i" command on an Ubuntu Terminal, which shows the headers of an HTTP…
john smith
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