What is RPC and why is it so important? - Super User
Remote Procedure Call (RPC) is a protocol that one program can use to request a service from a program located in another computer in a network without having to understand network details. (A procedure call is also sometimes known as a function call or a subroutine call.) RPC uses the client/server model.
rpc - Usefulness of having port 135 open in Active Directory ...
Apr 25, 2019 · Port 135 is the RPC Endpoint Mapper service. It is a service that allows other systems to discover what services are advertised on a machine and what port to find them on. It is mostly associated with remote access and remote management. It is a sensitive port that is associated with a slew of security vulnerabilities and should never be ...
windows registry - Whitelisting RPC dynamic ports - Super User
May 14, 2018 · Now I might be quite tired but as long as a session is initiated (lets say on TCP 135) then all the following communication within that session regardless of ephemeral ports should be good to go without any specific firewall rules but I guess that RPC behaves quite differently. Outgoing firewall rules should be good, Windows Firewall is disabled.
Which ports to open to ensure NFS mount succeeds?
0. I set up an NFS server and client to mount some NFS volumes (all servers are SUSE Enterprise Linux 11 for the record). The mount was successful, until I rebooted my machine and they were gone - it seemed they weren't reloaded from /etc/fstab. The relevant lines of fstab are below: myhost01:/data /data nfs nfsvers=3,rw,sync,_netdev 0 0 ...
RPC Connection Filtered with no Firewalls - Super User
Executing the same command on another workstation (PC2) in the same subnet and VLAN shows LISTENING along with all of the server's RPC endpoints. C:\>netsh int ipv4 show dynamicport tcp Protocol tcp Dynamic Port Range ----- Start Port : 49152 Number of Ports : 16384
Why are there many similar firewall rules with "RPC-EPMAP" suffix?
May 9, 2016 · 2. RPC-EPMAP is the RPC "endpoint mapper", which multiplexes several different MSRPC-based services over a single port. (Similar to HTTP vhosts, I guess.) Windows Firewall knows more than just TCP ports – AFAIK, it can block and allow individual MSRPC services. So my first guess would be that these rules have hidden parameters which select a ...
linux - iptables rules for nfs - Super User
Oct 31, 2013 · Flush and check Iptables rules. iptables -F. iptables -L. Obtain the firewalled NFS Server ports from the client machine and notedown the port numbers and the OSI layer 4 protcols. rpcinfo -p 'ip-addr-nfs-server' | sort -k 3. Restore the pre-nfs-firewall-rules now. iptables-restore < pre-nfs-firewall-rules-client.
RPC over TCP vs RPC over Named Pipes - Super User
Aug 18, 2023 · 1. In Windows 11, version 22H2. Microsoft made some changes to enhance security, one of those is the change in the communication of print related operations. Making RPC over TCP the default for client – server communications. They mentioned in the official article that RPC over Named Pipes is still available but is not recommended.
Does Psexec execute Remote Procedure Calls? - Super User
9. Yes. Psexec issues a remote procedure call to start up the specified process on the foreign machine with the credentials provided. Although traditionally 445 is used for SMB and 135 is used for DCOM, both can be used by RPC depending on the specifics of the protocol and the objects that are being remotely used.
What port or ports are used for File sharing in windows?
Dec 10, 2022 · I've seen all of these..file sharing related. UDP-137, UDP-138, TCP-139,TCP-445. And possibly TCP port 135, though that may be something to do with something called "RPC" (source (archived)). on an windows 7 machine all of those are listening. Some are related to NETBIOS so you can do start...\\compname. This site adds: