Posted by jpluimers on 2019/11/13
A few good links to a few alternatives for the built in Delphi REST client [WayBack] Hi looking for good and complete tutorial/course how to create RESTFul services with Delphi. Or if anyone use Delphi for creating RESTFul services feedb… – Gordan Paunovic – Google+
–jeroen
Posted in Communications Development, Delphi, Development, HTTP, Internet protocol suite, JSON, REST, Software Development, TCP | Leave a Comment »
Posted by jpluimers on 2019/06/20
The TCP SACK vulnerabilities as found by Netflix: [WayBack] security-bulletins/2019-001.md at master · Netflix/security-bulletins · GitHub.
Easy, but slow workaround from [WayBack] linux – How to disable TCP SACK for CentOS? – Super User:
Temporary (until boot):
echo "0" > /proc/sys/net/ipv4/tcp_sackPermanent (even after boot):
echo "net.ipv4.tcp_sack = 0" >> /etc/sysctl.conf sysctl -p
Coverage:
Don’t let miscreants play hacky-SACK with your gear. Apply these mitigations, patches now if you can
–jeroen
Posted in *nix, *nix-tools, Communications Development, Development, Internet protocol suite, Power User, Security, TCP | Leave a Comment »
Posted by jpluimers on 2019/05/21
Since many HTTP stacks do not have fields for this so it’s hard to get the originating IP address:
It is about these HTTP header fields with and without X- prefix:
ForwardedX-Forwarded-ForX-Forwarded-ByX-Forwarded-ProtoNote that widely used tools like HAProxy do not always fully adhere to the “standard”…
Via:
–jeroen
Posted in Communications Development, Development, HTTP, Internet protocol suite, Software Development, TCP | Leave a Comment »
Posted by jpluimers on 2019/03/15
For me, scp is like tar; somehow I Google this every time…
~ # ssh username@192.168.71.123 ... ~ # ls -alh `find /vmfs/volumes/ | grep -w W81Entx64CI | grep '\.vmdk$'` -rw------- 1 root root 200.0G Aug 26 22:48 /vmfs/volumes/552f5788-33e30274-8dba-001f29022aed/VM/PSO/W81Entx64CI/W81Entx64CI-flat.vmdk -rw------- 1 root root 500 Aug 19 16:36 /vmfs/volumes/552f5788-33e30274-8dba-001f29022aed/VM/PSO/W81Entx64CI/W81Entx64CI.vmdk
~ # cd /vmfs/volumes/Samsung512NVME/PSO/VM/W81Entx64CI/ ~ # time scp -v username@192.168.71.123:/vmfs/volumes/552f5788-33e30274-8dba-001f29022aed/PSO/W81Entx64CI/W81Entx64CI-flat.vmdk W81Entx64CI-flat.vmdk
I don’t know what’s worse–the fact that after 15 years of using tar I still can’t keep the flags straight, or that after 15 years of technological advancement I’m still mucking with tar flags that were 15 years old when I started.
The last line will logon over ssh and shows the file transfer in a verbose way.
Requirements:
Via [WayBack] shell – How to scp a folder from remote to local? – Stack Overflow (thanks [WayBack] Gryphius)
Image source: [WayBack] xkcd: tar
–jeroen
Posted in Communications Development, Development, Internet protocol suite, SSH, TCP | Leave a Comment »
Posted by jpluimers on 2019/02/21
From the geek fun department: [WayBack] IP over Avian Carriers – Wikipedia.
I learned through this slightly after the fight to keep HTTP status code 418 (I’m a teapot) which is part of RFC2324 released on April 1st, 1998.
The IP over Avian Carriers is part of three RFCs, all released on April 1st in various years:
–jeroen
via: Http-statuscode ‘I’m a teapot’ is voorlopig veilig – IT Pro – .Geeks – Tweakers
Posted in Communications Development, Development, Fun, Geeky, HTTP, Internet protocol suite, Software Development, TCP | Leave a Comment »
