Unix and Linux Stack Exchange
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Questions tagged [handshake]

9 questions
13
votes
4 answers

curl hangs after client hello

When I execute the following command in Ubuntu: curl -v --insecure -XGET 'https://user:pass@IP_ADDR:PORT/SOME_FILE.php' I get this output: * Hostname was NOT found in DNS cache * Trying IP_ADDR... * Connected to IP_ADDR (IP_ADDR) port PORT…
someone235
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9
votes
1 answer

Debian Stretch source tcp port is *always* even

While debugging some strange behaviour with an Azure load-balancer, I noticed that my local Debian Stretch TCP stack was only establishing TCP connections with an even-numbered port. I do not start a single TCP handshake with an odd source port. Is…
Olivier Dauby
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2
votes
0 answers

gnutls_handshake() failed - why?

I am running the following command: curl --tlsv1.2 -v --cacert ./mycert.crt --key ./key.pem --cert ./mycert.crt https://thirdparty.url I received the certificate from the third party I am working with after generating CSR and key files with…
Cris Ravazzano
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1
vote
0 answers

Airgeddon is not giving the handshake, despite it seems that it capture it

I was using few times Parrot OS live booted from RAM or USB as well. I have started the learning path with the basics, so I tried to grab handshake of my own wifi networks. I succeded few times, but now I am in problem. I am choosing the network…
RandomName8
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1
vote
2 answers

TCP reset after SYN ACK possibly related to "no route to host"

I have a problem with one of our clients trying to initiate a TCP connection to our server but it fails. In tcpdumpI see, that the client's device sends a SYN packet to which our server correctly replies with a SYN ACK. Immediately after that, our…
Tim
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1
vote
1 answer

`lftp` does not connect to FTPS (FTP over TLS) server but filezilla and ncftp yes

I have a shared hosted server with FTPS access, and I can connect it trough Filezilla with the following configuration: …
fauve
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1
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1 answer

How to fix curl sslv3 alert handshake failure on Gentoo?

I'm trying open a website with cURL like this: $ curl -vH "Accept: application/json" https://www.rocketleaguereplays.com/api/replays/-1/ The output is: * Trying 104.24.114.83... * Connected to www.rocketleaguereplays.com (104.24.114.83) port 443…
Hanashi
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1
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0 answers

Iptables and --tcp-flags

If I have the following rule in the nat-table in the prerouting chain: 0 0 REDIRECT tcp -- eth5 any anywhere anywhere tcp flags:FIN,SYN,RST,ACK/SYN redir ports 20000 My intention is to DNAT to the incoming…
pepperoni15
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0
votes
0 answers

Peer closed connection in SSL handshake

I have a question about nginx. I created a reverse proxy by nginx. Activated SSL encryption with Letsencrypt. All is ok and all requests from client are sent to origin server specified in upstream. Sometimes I have error 502 Bad Gateway…
sajjad jafari bojd
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